Réti Opening Help for Chessable Course : r/chess

After playing seriously for 2-3 months finally reach 1000elo (rapid). Can someone suggest good materials online that i can use as reference to reach 13000 next? : r/chess

Chess Courses Online - Chessable

Opening invention : r/chess

Smithy's Opening Fundamentals - Four Year Anniverary - Chessable

Chess Openings

What is the best Chess game opening with the first 5 moves for me to start with? - Quora

Theory Enthusiasts and Followers of Top Level Chess Suggestions to my Tier List. : r/chess

Thinkers Publishing Archives - British Chess News

Réti Opening - 1.Nf3 (Zukertort Opening) - PPQTY

Fighting the Reti and KIA

Chess Pathshala - Opening Blunders #3- The Reti Opening!

Everyman Chess Archives - British Chess News

Réti Opening: Réti Gambit - Chess Openings

The Ragozin Defense