Hey there
@Always4Angel, welcome to the hellmouth. First of all love the name.
I'm an Angel fanatic as well as a more recent fan myself. It's always nice to meet folks just discovering the shows.
Luckily it's not too difficult to avoid spoilers around here because each season has its own board separate from the rest. So you should be able to discuss what you have seen without the presence of any references to what you haven't.
I believe I was in the mid-beginning-ish area of season 5 when I made my account...maybe earlier since I didn't post much at first, but my point is that I as well hadn't finished the series but was able to participate fine.
You're almost ready to start AtS:
Angel if you haven't already (hey I started it first so it could happen), I'm interested in your take since you love Angel because it's his spin-off series. Yup, he landed himself his own series! As a fellow Angel fan, I prefer AtS (I have more reasons than just that but none I can discuss with you right now).
Chat me up anytime. I'll get you in with the right people.
😉