Well, welcome back!
In terms of storyline, not as much has happened as you might think. The two big updates on that front are the LESIG, who are players that act as liaisons for the orgs, or people who act as a way for factions and individuals to set up meetings with the story characters like Niobe or whatever. Very cool stuff. The other thing is the availability of the CYPH and EPN tags, indicating Cypherite and E Pluribus Neo allegiance, respectively. Since CYPHs are still flagged as Machinist and EPN are Zion, this is almost entirely for RP purposes only.
But for real storyline, what's going on is this: The General has appeared, and he and the Commandos have sided with Zion. The machines have lost a case. We've been looking for it for quite a while, and we now know the "The Bike Messenger" has it. Or perhaps someone has retrieved it by now. We're also looking for the key to open the case, since inside is supposed to be something to make up godly. But Anome did a "butterfingers" and lost the key. In the middle there, Sleepwalkers showed up for the Anniversary Event. Kinda like super-radical Cypherites who wanted to reinsert everyone... but would have just destabilized the Matrix, so it was pretty idiotic of them.
But CR2... yeah, that takes a bit of getting used to. Check out
this and
this and
this to get started. Start throwing yourself into duels with some people and figure out what works best for you. If you're on Recursion and want to be MA, might want to send me a tell. I'm pretty good (or so I tell myself) and can give you some tips.
