LNBot

Installing bitcoind

sudo apt-add-repository ppa:bitcoin/bitcoin
sudo apt-get update
sudo apt-get install bitcoind

Create bitcoin.conf:
mkdir ~/.bitcoin
touch ~/.bitcoin/bitcoin.conf

Copy and paste below to bitcoin.conf that was just created

server=1
testnet=1
daemon=1
zmqpubrawblock=tcp://127.0.0.1:28332
zmqpubrawtx=tcp://127.0.0.1:28333
rpcuser=user
rpcpassword=passwd

Running bitcoind

Run the following command to start bitcoind server:
bitcoind

Check the current block height:
bitcoin-cli getblockcount

If it is equal to block height shown at https://blockstream.info/testnet/, that means node is fully synced.

Installing lnd

Download golang:
wget https://dl.google.com/go/go1.12.linux-amd64.tar.gz

Install golang:
sudo tar -C /usr/local -xzf go1.12.linux-amd64.tar.gz

Add the line below to .bashrc file and run source ~/.bashrc:
export PATH=$PATH:/usr/local/go/bin

Download, compile and install lnd

go get -d github.com/lightningnetwork/lnd
cd ~/go/src/github.com/lightningnetwork/lnd
make && make install

Add this line to .bashrc file and run source ~/.bashrc:
export PATH=$PATH:~/go/bin

Installing Tor

Run:
sudo apt install apt-transport-https

Add the following 2 entries to /etc/apt/sources.list:

deb https://deb.torproject.org/torproject.org xenial main
deb-src https://deb.torproject.org/torproject.org xenial main

Run the following commands:

curl https://deb.torproject.org/torproject.org/A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89.asc | sudo gpg --import 
sudo gpg --export A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89 | sudo apt-key add -
sudo apt update
sudo apt install tor deb.torproject.org-keyring

Add the following lines to /etc/tor/torrc:

SOCKSPort 9050
Log notice stdout
ControlPort 9051
CookieAuthentication 1

Kill the running tor processes first (if there is any):
sudo killall tor

Then run the tor with:
tor &

Configuring lnd

Create lnd.conf:
mkdir ~/.lnd
touch ~/.lnd/lnd.conf
And paste the following:

[Application Options]
alias=myalias
debuglevel=info
;externalip=

[Bitcoin]
bitcoin.active=1
bitcoin.testnet=1
bitcoin.node=bitcoind
bitcoin.defaultchanconfs=1

[Bitcoind]
bitcoind.rpcuser=user
bitcoind.rpcpass=passwd
bitcoind.zmqpubrawblock=tcp://127.0.0.1:28332
bitcoind.zmqpubrawtx=tcp://127.0.0.1:28333

[Tor]
tor.active=true
tor.v3=true
tor.streamisolation=true
tor.privatekeypath=~/.lnd/v3_onion_private_key

Running lnd and accepting key send payments

Run lnd with the command:
lnd --accept-key-send &

Creating a wallet

When lnd is run for the first time, a new wallet has to be created:
lncli create
This will prompt for a wallet password, and optionally a cipher seed passphrase.

After creation of the wallet, lnd will sync with the network which can take up to an hour depending on the machine.
After the sync, create a new wallet address:
lncli newaddress np2wkh
And send some testnet Bitcoin to this address from https://tbtc.bitaps.com/.

Creating Channels

To open a channel to 1ml.com's public node with a capacity of 100,000 satoshi.
Run the following:

lncli connect 0217890e3aad8d35bc054f43acc00084b25229ecff0ab68debd82883ad65ee8266@23.237.77.11:9735
lncli openchannel --node_key=0217890e3aad8d35bc054f43acc00084b25229ecff0ab68debd82883ad65ee8266 --local_amt=100000

Sending a key send payment

lncli sendpayment --dest=03f0afb639388c025189a19cf90421b6c728a0addc1ea9d1c32c09332a7a6b5373 --amt=100 --final_cltv_delta=40 --key_send