Hope you have an easy enough time re-learning. I've been poking around on here over the last day and feel like I've only scratched the surface of everything there is to find on here.
If you have any questions, you're welcome to send in a help ticket, or post on the help + questions forum! If you would like some one-on-one help, you can also join Adopt A Newbie, where an adopter will "adopt" you, and show you around the site!