The first step is to download all your data from Koineks and import it into Koinly. There are a few ways you can do this:
If you want to use CSV files, you must make sure to import your deposits/withdrawals and trades for ALL previous years and not just the current one!
That's pretty much it. The only other thing to keep in mind is to tag your airdrops/forks so they appear as Income on your generated cryptocurrency tax documents!