What Theoretical Endgames Should You Know as a 1000?

I'm obviously not at anything better than novice level, but I'm really interested in endgames and would like to know what I should learn about them. I know the basic checkmates, basic endgame fundamentals, and that stuff. I also have looked into Philidor Position, Lucena Position, Vacruna Position, and Bishop and king vs. Rook and king endgames (kind of random), and queen vs. a 7th rank pawn.  I'd like to learn about rook vs. queen and stuff, but that seems kind of random and unorganized.

What else do you guys think I need to learn at my level?

I'd recommend basic checkmates such as Queen and King, two Rooks and King, and Rook and King. Then, I'd learn how to Queen a Pawn. Two simple ways to learn that is by learning the T principle of the pawn, and King opposition. Hope this helps!

I think this is great for beginning to look into endgames, but a lot of these mentioned are certainly ahead of 1000-ish rating.

I agree with @Chess_Player_lol in that converting this single pawn into a win is a key endgame to know and it was a big confidence boost to me when I started with chess because I knew that if I could get a similar position with any single pawn (excluding a-file or h-file pawns which may be easier drawn), then I could convert it into a win

@TPFRecoil is also spot on with the checkmates. I don't know what the "T principle" of the pawn is though...is this the same as "Rule of the Square?"

This is enough endgame work for a 1000 chess.com player I'd say. In fact, this is probably enough to reach 1200 chess.com rating as far as endgames are concerned. 

1200-1500 chess.com rating or so, my endgame study also expanded to including some other "basics" that are slightly tougher such as how to play opposite colored Bishop endgames (notoriously drawish, but it is worth knowing how to safely draw when down by a pawn or two and sometimes, you can even force a win!). As for checkmates, I learned 2 Bishop checkmate around 1600 and learned B + N checkmate around 1800, but everyone is different obviously. I've even converted B + N checkmate in a blitz game once or twice before but even titled players have occasionally failed to convert; usually in large part due to time pressure or forgetting the techniques they studied years ago.

T principle is the idea that if your king ever reaches three key squares that make the horizontal bridge of a T in front of your pawn, you will be able to queen that pawn.

If you draw a T with the squares e4, e5, e6, d6, and f6, then the squares d6, e6, and f6 are the squares that, if you reach with your king, you will queen the pawn (assuming no piece can interfere).

Ah okay thanks. I knew this principle, but I never heard it called "T." I like this though; kind of a visual name

also queen vs pawn endgames are handy to know, and despite their relative difficulty to pull off as compared to other endgames, the concepts are easy to pick up. it's good to know, but you don't need to learn it if you don't want to.

The more you know about endgames, the better. First 3 men, then 4 men, then 5 men... Rook endings are most important as they occur more often.

Edited: Never mind, you already looked into this one.

Look at Silmans Complete Endgame Course book. The knowledge you should have at a certain rating  (as per the authors opinion) is contained in chapters for that rating range. 

king+ 1 pawn, rook roller, queen mates

Pawn endgames, Rook vs king endgame and Queen vs King endgames

i dont really know anything about endgames besides how to use your pawn majority to create a passed pawn and to shoulder the enemy king away from your own passed pawn, and I got to 1600 without any of the theoretical endgames (incoherent sentence sorry)

Basic opposition, fundamental pawn endgames, K+Q vs. K+B, and K+Q vs. K+N endgames.

As you are already 1000, I assume you already know how to checkmate with two rooks, one queen, or one rook.

You know enough in my opinion

My suggestion: run, don't walk, to get Silman's Complete Endgame Course.  Unlike other endgame books, he organizes the chapters by skill level.  Chapter 1 is for under 1000, Chapter 2 is for 1000-1200; Chpt 3 is 1200-1400; etc., all the way up to 2200-2400.  I've learned a tremendous amount from it.  He's got a review quiz at the end of each chapter.  (New from Amazon, $21; used from $14 and up)

BTW, I've taken 11 exercises from the book and put them in a library -- so one can play against the 3200-bot (i.e., you should be able to force a win, or draw -- depending on the exercise).  There are no explanations there -- the exercises are more for somebody who has learned the technique but wants to practice it.  https://www.chess.com/c/29BGHTLra  (I will add more from time to time)

If you learn king and pawns endgames and also king, rooks and pawn endgames, you'll start progressing quickly, because at your rating not many players know those endings, so you'll definitely have an edge.

Knowing rook+king and the rule of the square is already plenty for a 1000. Focus on other aspects of your chess to improve.

Just know the basics or learn them for now. So much other material you could be studying to improve your overall game than spending hours looking at endgame treatises.