How do you practice endgames?

Where do I start when trying to get better at endgames? What are the main ideas and themes?

I suck at endgames and am losing quite a few games lately because of it. I don't know where to begin with endgame study. Could you guys/girls point me in the right direction with some key ideas to begin learning? I'm pretty good at tactics for someone my rating (around 1300 blitz, around 1400 rapid). I am bad at strategy though. Maybe that's why I lose a lot of endgames, because I don't realize I'm about to go into a losing one. I think one part of my problem for me with endgames, is that the board is so wide open. There are so many options on where to put your rooks, bishops, etc.  How do I narrow down and focus on the key areas to control? 

Thanks

Analize your ending games.And i liked a lot Fischer endings.Petrosian endings instead i never understood them.

I find the 'key positions' and 'drills' very helpful on this site. You could also start by looking at some simple king and pawn, king pawn and rook endings, and add complexity gradually. study the Lucena position/Philodor draw. I found some good material on YouTube by searching things like 'practical rook/bishop/pawn endings'. John Bartholomew and Tony Rotella both have an endings playlist on their YouTube channels.

A stream of consciousness on endings: Advancing a pawn to promotion and preventing your opponent from doing so should be your absolute priority. Losing material does not (99% of times) matter if you can make a new queen. If you have a rook it belongs behind a passed pawn of yours eg your rook on a1 your pawn on a6. If your opponent has a passed pawn your rook should attack it from the rear eg your rook on a8 opponents pawn on a4. Use your king actively either to support your pawns or restrain your opponents. Look at 'the square'. This is when you draw a square from your king to establish if it can get across in time to stop a pawn from queening. If you are up an exchange eg rook vs bishop or knight try to keep as many pawns on as possible as the fewer pawns remain the harder it is to win. Vice versa if you are down an exchange, try to exchange pawns off. Various endings are drawn with best play...knowing these can help you steer inferior positions to a draw eg. lone rook vs rook and pawns on f and h file (or a and c file) is drawn. lone bishop vs bishop and a or h pawn where the queening square of the pawn is the opposite colour of the bishop is drawn - just get your king to the queening square. Opposite colour bishops plus pawns is very hard to win and should be a draw. Keep an eye out for stalemate ideas. And lastly dont give up until you are dead lost - it is surprisingly easy to mess up a winning ending.

Have you looked at the videos on this site? Some of these are good, e.g. the Danny Rensch King and Pawn end game series

Use the drills here and there's quite a few resources on the web. Pandolfini's endgame book gets a lot of attention, I have it but I've barely opened it. Troitzky's 360 Brilliant and Instructive Endgames is excellent. Number one thing to me is never forget that in the endgame, the king is a fighting piece. His placement on the board is paramount to winning most endgame positions.

Thanks for the tips guys. I'm already familiar with some of the ideas mentioned, but there are some great suggestions. I'm gonna make a little list I think.  I forgot about the drills on here! Pretty cool.