I don't know how to exchange. Can you help me? Can you talk about the tutorial?
Go to the Discord channel
https://discord.gg/PM9j5XQ and message the Swapotron bot (right click on it's name on the list on the right and select message). Type "!swap" and the bot will reply with instructions of what to do and your SIGT swap address.
Send your coins to that address and after 15 confirmations the bot will let you know the transfer is complete and request your STAK address.
The bot will then let you know when everything is complete.