1 - install dependencies:

sudo apt-get install \
build-essential pkg-config libc6-dev m4 g++-multilib \
autoconf libtool ncurses-dev unzip git python \
zlib1g-dev wget bsdmainutils automake

2 - clone repo:

git clone https://github.com/z-classic/zclassic.git

3 - setup:

cd zclassic

./zcutil/build.sh -j$(nproc)

./zcutil/fetch-params.sh

./src/zcashd

4 - after starting zcashd, stop it, and create a conf file:

sudo apt-get install vim

vim ~/.zclassic/zclassic.conf

* press i for insert mode and write:

addnode=dnsseed.zclassic.org
addnode=dnsseed.rotorproject.org
rpcuser=rpcusername
rpcpassword=yourrandompassword

* press escape | press : | write wq | and press enter

5 - using Zclassic

create t-addr:
./src/zcash-cli getnewaddress

create z-addr:
./src/zcash-cli z_getnewaddress
ztbqWB8VDjVER7uLKb4oHp2v54v2a1jKd9o4FY7mdgQ3gDfG8MiZLvdQga8JK3t58yjXGjQHzMzkGUxSguSs6ZzqpgTNiZG

ZADDR='ztbqWB8VDjVER7uLKb4oHp2v54v2a1jKd9o4FY7mdgQ3gDfG8MiZLvdQga8JK3t58yjXGjQHzMzkGUxSguSs6ZzqpgTNiZG'

address list:
./src/zcash-cli z_listaddresses

network stats:
./src/zcash-cli getinfo

send with z-addr:
If someone gives you their z-addr:
FRIEND='zcfPjWhubYxCHYknDPc9di3V5yvsqLv6iLVq55TqyNnB5naUUw4bptnrmdS4PNLBF5UnJRRcUxFLcbFBNb8y263ZfjC82hT'
You can send 0.9 ZEC by doing:
./src/zcash-cli z_sendmany "$ZADDR" '[{"amount": 0.9, "address": "$FRIEND"}]' check:
./src/zcash-cli z_getoperationresult

transaction list:
./src/zcash-cli listtransactions