Filed for a tax extension, Need Help

I’m new in crypto. So, doesn’t know much about crypto taxes. I’ve few gains and also sell a few times. My friends told me to pay taxes. I didn’t know anything. So, I asked my friend to help me. I paid tax at the last moment and filed for an extension with my friend’s help. I’m still figuring this out. I don’t want to depend on my friend. I was thinking maybe you guys can help me to understand it. I don’t know, how should I calculate my tax. Should I hire someone to do it or are there any other less expensive ways to do it? I searched about it and got to know we can also do taxes by using tax tools. That I’ve no idea or experience.

Can anyone please suggest to me what should I do or can give some suggestions regarding tools? I know, it sounds a lot. But I hope you guys can help me out.