Most specifically this group as the name implies BITCOIN TALK, is a place to talk about Bitcoin and also make contributions and also make comments for wider ideas to flow and there are other crypto currencies discussed down here.

And outside Bitcoin knowledge there are other boards which entertain different discussion outside Bitcoin or crypto so the choice is yours just use your time go round the board and get the knowledge you want.
The things you can learn from the platform can't be mentioned cause they are too much, when you go for the hunt you will see for yourself what you have learnt.