diff --git a/13_2_Knowing_Your_lightning_Setup.md b/13_2_Knowing_Your_lightning_Setup.md
new file mode 100644
index 0000000..5028bd9
--- /dev/null
+++ b/13_2_Knowing_Your_lightning_Setup.md
@@ -0,0 +1,228 @@
+# 13.2: Knowing Your Lightning Setup
+
+> :information_source: **NOTE:** This is a draft in progress, so that I can get some feedback from early reviewers. It is not yet ready for learning.
+
+Before you start playing with Lightning Network, you may always want to come to a better understanding of your setup.
+
+## Know Your c-lightning Directory
+
+To start with, you should understand where everything is kept: the `~/.lightning` directory.
+
+The main directory just contains as many networks as configured,  in this case we have testnet directory.
+
+```
+$ ls ~/.lightning
+testnet
+```
+
+In your ~/.lightning/testnet directory, you'll find that contains all of the guts:
+```
+$ ls ~/.lightning/testnet3
+config  gossip_store  hsm_secret  lightningd.sqlite3  lightningd.sqlite3-journal  lightning-rpc
+```
+
+> :link: **TESTNET vs MAINNET:** If you're using mainnet, then _everything_ will instead be placed in the main `~/.lightning/bitcoin` directory. These various setups _do_ elegantly stack, so if you are using mainnet, testnet, and regtest, you'll find that `~/.lightning/bitcoin` contains your config file and your mainnet data, the `~/.lightning/testnet` directory contains your testnet data, and the `~/.lightning/regtest` directory contains your regtest data.
+
+## Know Your lightning-cli Commands
+
+Most of your early work will be done with the `lightning-cli` command, which offers an easy interface to `lightningd`. 
+```
+$ lightning-cli help
+lightning-cli: WARNING: default network changing in 2020: please set network=testnet in config!
+=== bitcoin ===
+
+feerates style
+    Return feerate estimates, either satoshi-per-kw ({style} perkw) or satoshi-per-kb ({style} perkb).
+
+newaddr [addresstype]
+    Get a new {bech32, p2sh-segwit} (or all) address to fund a channel (default is bech32)
+
+reserveinputs outputs [feerate] [minconf] [utxos]
+    Reserve inputs and pass back the resulting psbt
+
+sendpsbt psbt
+    Finalize, extract and send a PSBT.
+
+signpsbt psbt
+    Sign this wallet's inputs on a provided PSBT.
+
+txdiscard txid
+    Abandon a transaction created by txprepare
+
+txprepare outputs [feerate] [minconf] [utxos]
+    Create a transaction, with option to spend in future (either txsend and txdiscard)
+
+txsend txid
+    Sign and broadcast a transaction created by txprepare
+
+unreserveinputs psbt
+    Unreserve inputs, freeing them up to be reused
+
+withdraw destination satoshi [feerate] [minconf] [utxos]
+    Send to {destination} address {satoshi} (or 'all') amount via Bitcoin transaction, at optional {feerate}
+
+=== channels ===
+
+close id [unilateraltimeout] [destination] [fee_negotiation_step]
+    Close the channel with {id} (either peer ID, channel ID, or short channel ID). Force a unilateral close after {unilateraltimeout} seconds (default 48h). If {destination} address is provided, will be used as output address.
+
+fundchannel_cancel id
+    Cancel inflight channel establishment with peer {id}.
+
+fundchannel_complete id txid txout
+    Complete channel establishment with peer {id} for funding transactionwith {txid}. Returns true on success, false otherwise.
+
+fundchannel_start id amount [feerate] [announce] [close_to] [push_msat]
+    Start fund channel with {id} using {amount} satoshis. Returns a bech32 address to use as an output for a funding transaction.
+
+getroute id msatoshi riskfactor [cltv] [fromid] [fuzzpercent] [exclude] [maxhops]
+    Show route to {id} for {msatoshi}, using {riskfactor} and optional {cltv} (default 9). If specified search from {fromid} otherwise use this node as source. Randomize the route with up to {fuzzpercent} (default 5.0). {exclude} an array of short-channel-id/direction (e.g. [ '564334x877x1/0', '564195x1292x0/1' ]) or node-id from consideration. Set the {maxhops} the route can take (default 20).
+
+listchannels [short_channel_id] [source]
+    Show channel {short_channel_id} or {source} (or all known channels, if not specified)
+
+listforwards 
+    List all forwarded payments and their information
+
+setchannelfee id [base] [ppm]
+    Sets specific routing fees for channel with {id} (either peer ID, channel ID, short channel ID or 'all'). Routing fees are defined by a fixed {base} (msat) and a {ppm} (proportional per millionth) value. If values for {base} or {ppm} are left out, defaults will be used. {base} can also be defined in other units, for example '1sat'. If {id} is 'all', the fees will be applied for all channels. 
+
+=== network ===
+
+connect id [host] [port]
+    Connect to {id} at {host} (which can end in ':port' if not default). {id} can also be of the form id@host
+
+disconnect id [force]
+    Disconnect from {id} that has previously been connected to using connect; with {force} set, even if it has a current channel
+
+listnodes [id]
+    Show node {id} (or all, if no {id}), in our local network view
+
+listpeers [id] [level]
+    Show current peers, if {level} is set, include logs for {id}
+
+ping id [len] [pongbytes]
+    Send peer {id} a ping of length {len} (default 128) asking for {pongbytes} (default 128)
+
+=== payment ===
+
+createonion hops assocdata [session_key]
+    Create an onion going through the provided nodes, each with its own payload
+
+decodepay bolt11 [description]
+    Decode {bolt11}, using {description} if necessary
+
+delexpiredinvoice [maxexpirytime]
+    Delete all expired invoices that expired as of given {maxexpirytime} (a UNIX epoch time), or all expired invoices if not specified
+
+delinvoice label status
+    Delete unpaid invoice {label} with {status}
+
+invoice msatoshi label description [expiry] [fallbacks] [preimage] [exposeprivatechannels]
+    Create an invoice for {msatoshi} with {label} and {description} with optional {expiry} seconds (default 1 week), optional {fallbacks} address list(default empty list) and optional {preimage} (default autogenerated)
+
+listinvoices [label]
+    Show invoice {label} (or all, if no {label})
+
+listsendpays [bolt11] [payment_hash]
+    Show sendpay, old and current, optionally limiting to {bolt11} or {payment_hash}.
+
+listtransactions 
+    List transactions that we stored in the wallet
+
+sendonion onion first_hop payment_hash [label] [shared_secrets] [partid]
+    Send a payment with a pre-computed onion.
+
+sendpay route payment_hash [label] [msatoshi] [bolt11] [payment_secret] [partid]
+    Send along {route} in return for preimage of {payment_hash}
+
+waitanyinvoice [lastpay_index] [timeout]
+    Wait for the next invoice to be paid, after {lastpay_index} (if supplied).  If {timeout} seconds is reached while waiting, fail with an error.
+
+waitinvoice label
+    Wait for an incoming payment matching the invoice with {label}, or if the invoice expires
+
+waitsendpay payment_hash [timeout] [partid]
+    Wait for payment attempt on {payment_hash} to succeed or fail, but only up to {timeout} seconds.
+
+=== plugin ===
+
+autocleaninvoice [cycle_seconds] [expired_by]
+    Set up autoclean of expired invoices. 
+
+estimatefees 
+    Get the urgent, normal and slow Bitcoin feerates as sat/kVB.
+
+fundchannel id amount [feerate] [announce] [minconf] [utxos] [push_msat]
+    Fund channel with {id} using {amount} (or 'all'), at optional {feerate}. Only use outputs that have {minconf} confirmations.
+
+getchaininfo 
+    Get the chain id, the header count, the block count, and whether this is IBD.
+
+getrawblockbyheight height
+    Get the bitcoin block at a given height
+
+getutxout txid vout
+    Get informations about an output, identified by a {txid} an a {vout}
+
+listpays [bolt11]
+    List result of payment {bolt11}, or all
+
+pay bolt11 [msatoshi] [label] [riskfactor] [maxfeepercent] [retry_for] [maxdelay] [exemptfee]
+    Send payment specified by {bolt11} with {amount}
+
+paystatus [bolt11]
+    Detail status of attempts to pay {bolt11}, or all
+
+plugin subcommand=start|stop|startdir|rescan|list
+    Control plugins (start, stop, startdir, rescan, list)
+
+sendrawtransaction tx
+    Send a raw transaction to the Bitcoin network.
+
+=== utility ===
+
+check command_to_check
+    Don't run {command_to_check}, just verify parameters.
+
+checkmessage message zbase [pubkey]
+    Verify a digital signature {zbase} of {message} signed with {pubkey}
+
+getinfo 
+    Show information about this node
+
+getlog [level]
+    Show logs, with optional log {level} (info|unusual|debug|io)
+
+getsharedsecret point
+    Compute the hash of the Elliptic Curve Diffie Hellman shared secret point from this node private key and an input {point}.
+
+help [command]
+    List available commands, or give verbose help on one {command}.
+
+listconfigs [config]
+    List all configuration options, or with [config], just that one.
+
+listfunds 
+    Show available funds from the internal wallet
+
+signmessage message
+    Create a digital signature of {message}
+
+stop 
+    Shut down the lightningd process
+
+waitblockheight blockheight [timeout]
+    Wait for the blockchain to reach {blockheight}, up to {timeout} seconds.
+
+=== developer ===
+
+dev-listaddrs [bip32_max_index]
+    Show addresses list up to derivation {index} (default is the last bip32 index)
+
+dev-rescan-outputs 
+    Synchronize the state of our funds with bitcoind
+
+---
+run `lightning-cli help <command>` for more information on a specific command
+```