Old returning player some questions

Hey

Its been a long while since I have played. Old player, solid skills but kind of lost on current state of affairs.

Saw Null Sec local black out (applaud that, one of the reasons I am back

Saw invasion by drifters and also interested in that.

Any links would help on the following or a response. I did search the forums but looking for some specifics.

For high-sec invasion, I am assuming there is a notice board on where it’s occurring (live intel? Channel maybe).

What kind of solo fits for invasion. I can pretty much fly any sub-cap ship.

Is low-sec active in general?

What other significant changes (other then CCP selling Eve) have occurred in the past 2-3 years?

Thanks for any help.

Adamant