Stocks/Investment Thread

Anyone buy stocks? 

If so, what companies and/or markets do you feel confident in?

I've really started looking into this for about a year now and I'm considering investment in Tesla stock in the near future. I'm not too savvy in economics, but I'd really like to know more about it. If anyone has advice or experience, please say such below.

Mega Bump. Anyone been lucky with Bitcoin? at 10.4k atm
I laugh at the idea of buying in even last week and already making 10 grand. Keep thinking a crash is imminent but here we are.
bitcoin may as well just be an online casino at this point.