Resource's for learning the Ruy Lopez?

Recently I've taken an interest in learning the Ruy Lopez for white. I've been playing the Italian for about 1 year and have enjoyed it, however the Ruy Lopez seems to lead to middlegames that seem to be more interesting for me. However, I know it's an extremely theory-heavy opening and I don't know where to start. Any advice is greatly appreciated !

Grandmaster games, lichess database is good, set it to masters. If you look on chessable I am sure you can find good content for the ruy lopez by strong players. Then you can give it a try, then see what you like further in the theory.

My generation learned the Ruy starting in Fischer's book [60 memorable ...] then studying a thin book of Leonard Barden for an overview of the whole thing. Both are still excellent for what they cover but omit several recently common lines.  Beyond those two, there are a bunch of more recent books that I check lines in (but I still begin in the books of Fischer and Barden).

You have access to the lessons here, and there are a few different ones on the Ruy Lopez

Dejan Bojkov covers a couple of famous Boleslavsky games where he wins as White.

https://www.chess.com/lessons/ruy-lopez-lessons

Boleslavsky vs Panov, 1940

Boleslavsky vs Kotov

In The Bookworm Club I list additional resources on learning this opening here: https://www.chess.com/clubs/forum/view/ruy-lopez-spanish-opening

IM John Watson's stupendous Mastering the Chess Openings: Volume 1 is good for covering general theory behind the Ruy Lopez for White and Black (along with almost all other 1.e4 openings). John also brings out some discussion points you won't get in any other book because he looks at some ideas that are off the beaten path.

All that said, none of John's four-volume set pretends to be the be all and end all of opening theory on any opening (his most recent book on the French Defense, however, was hundreds and hundreds of pages of heavy theory...no surprise as he's been playing the French since the 1960s. I met him in the 70s. Good guy.) Instead he provides useful insights that can help guide people as they investigate openings they think might be interesting.

the lasker method by giddins and welling (if you are not willing to learn much theory)

Thank you everyone for the advice! I'll take a look into all of your recommendations

actually you don't need the book

basically it just recommends the exchange, and you try to get the queenside pawn majority rolling in the endgame.

Ohhhhhh okay, the exchange makes sense to avoid theory, however it's not what I want to play lol.

https://youtube.com/playlist?list=PLDnx7w_xuguFFuIkDEBNR_SnmhTT-qMcA

Nils Grandilus' "The Grand Ruy Lopez" course on Chessable is very good.

Good Chess Openings Books For Beginners and Beyond...(search 'Ruy')...

https://www.chess.com/blog/RussBell/good-chess-openings-books-for-beginners-and-beyond

many of these resources have content on the Ruy Lopez....for example 'Hanging Pawns' opening tutorials on YouTube....

Chess Openings Resources for Beginners and Beyond...

https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond

The best resource is a data base.
Example:
https://www.chessgames.com/perl/chessgame?gid=2134533