This is a great time to be mining and buying up alt coins that you feel are promising. I told friends to buy iota recently, they are happy.

I would say cardano, as low as it is, is a pretty solid investment. They should have exciting stuff going on next year.

I am trying to start mining myself, just not sure what to mine. I want to spent a good chunk on the build though. 3-5g maybe. Recommends?