Welcome to EAB!
You'll find here a very active community of Amiga fans.
I have myself also an expanded A4000/040, which is a great machine.
It happened also to me after 8 years of not touching my Amiga (besides powering it up once a month or so) I had an urgent necessity of returning back to the Amiga world and since I joined EAB, it has been great fun.
Any help you need, just ask!