Reddit – Dive into anything

I am not that big into crypto, but me and my friends started doing some Pi mining in 2020 and did it for about a week or so. I left because I thought it was a scam. Now I don’t know what to think. I saw the market price today and I was pretty surprised to see it actually worth something. Now, my question is, I have like 200 pi, should I sell them? And how would I do that?

How does lockup rate work? I lock a portion of my coins so I can send some to the main net? What even is the main net?

Im a total newbie when it comes to crypto so I’m sorry if this is not allowed in the subreddit.