Old player trying to catch up

[ParagonSniper]

So I'm an old player that started back when the open beta happened and I played on and off for years, generally being able to keep up with the content releases. However a while back I stopped playing around the release of that one quest where you find out what the Tenno actually are and obviously the game moved on without me. 

Basically my question is how much have I missed since then, and what would be the best course of action to getting up to speed with all the new quests and such?

Edited July 6, 2017 by ParagonSniper
typo

[RagingGrizzly]

You can just check out the previous patch notes on the warframe wikia.

[Arcainyx]

I don't have the link for it but I've seen other people link a video for returning players in for posts like this one.  Hopefully if this gets bumped enough one of those people will be kind enough to link it.  In the meantime if you have any specific questions don't hesitate to post them here or ask elsewhere.

[babywrath]

Here's a rundown on the latest happenings. Not entirely complete but all the main points are there. Also with the recent update: Harrow Frame & Quest, Melee riven mods, Scourge, Knell