Attempting the jump from OH2

I'm trying to make the change to reconnect with old friends and make new ones.
Somehow my brain is struggling to understand the lay of the land here, left feeling lost and unsure of how to navigate, research, reintegrate. Maybe it's a simple matter of just putting in the time. Any tips, tricks or friendly reconnections and new ones are appreciated.
Lare

Read the guidelines and also read the staff announcements at the top of various forums.