Before u started be sure u extracted most valuable bitcoin forks:
https://steemit.com/bitcoin/@pieczywo/how-to-extract-multiple-bitcoin-forks-easiest-and-fastest-way
Bitcore BTX (02.11.2017 block 492820) 1 BTC : 0,5 BTX
https://coinmarketcap.com/currencies/bitcore/
1. Backup your bitcoins
Create new wallet and send your bitcoins from old to the new one. For fast and easy use i recommend https://electrum.org/
2. Export your private keys
You can find multiple ways to do this e.g.
To export a private key from your Bitcoin-Qt / Bitcoin Core client:
Launch your Bitcoin client
Click on 'help' in the menu bar (top right)
Click on 'debug window'
Select the 'console' tab
If your wallet is protected by a passphrase (i.e. you have to enter a passphrase before you can send) unlock it by typing
walletpassphrase "your walletpassphrase here" 600
dumpprivkey [your Bitcoin address here]
This will return the private key which will start with the number 5
3. Install Android Emulator
If you have not-everyday-use Android phone or tablet skip this point.
This one is simple and very easy to use: https://www.bluestacks.com/
4. Install Coinomi App
https://play.google.com/store/apps/details?id=com.coinomi.wallet&hl=pl
5. Claiming BTX with Coinomi Wallet
In menu click "+coins"
Select "Bitcore"
In top-right corner pres "..." and select "sweep wallet" and paste your priv key (not all keys from may are working)
6. Selling this tokens
https://www.cryptopia.co.nz/Register?referrer=gremlin000
Crytopia allow trading BTX to BTC and then to any other cryptocurrency with low fees without verification.
Here are some other markets accepting bitcore
https://coinmarketcap.com/currencies/bitcore/#markets
In the future i will add more instructions.