Just got back after some years, I think I need some refresher course. 10/21
Welcome back
Maybe it would help even more if you'd also take a look at these topics?
Unofficial list of (official) Bitcointalk.org rules, guidelines, FAQ
Newbies - Read before posting]
What is Bitcoin? A Step-By-Step Guide For Beginners
[TIPS] to avoid pyramid quotes (for Newbies)
And, also, the sticky topics from Meta.
I've seeb different changes so far and will continue refreshing my knowledge here since I'll be active from now on. Thanks!