My "regret" is not chatting earlier for the same reasons. It is the social side of Steem. I didn't really even know about the chats....
When you say you wished you learnt about trading faster... what do you mean? Day trading crypto? Or something else.
vote trading
:D
No. Trading on exchanges. I took some liquids and tried after a few months and actually did okay but I didn't really understand much of what I was doing. Didn't know about ICOs and what was decent or shitcoin. I mostly just looked at the patterns I saw and guessed like Haejin except without the fancy terms and the BOOOOMS!!!
Some of the Apps are already made now. Just not by me ;)