The first and usually only step is to download all your transaction data from ByteTrade and upload it to Koinly. There are a few ways you can do this:
If you decide to import CSV files, you must make sure to import your deposits/withdrawals and trades for ALL years and not just the current one!
That's all you have to do. Don't forget to tag your airdrops/forks so they appear as Income on your final crypto tax reports!