Lichess can serve you arbitrarily many puzzles [1]. They'll keep track of your performance and adjust the difficulty of the problems accordingly.

[1] https://lichess.org/training

and here is the project used to generate Lichess puzzle database

https://github.com/ornicar/lichess-puzzler

I can say definitively that many of the easier puzzles are just obvious forks. Don't ask how I know, though :P.

Lichess classify puzzles by themes [0], you can practice on the ones you want. It has more than 500k fork-themed puzzles (of various difficulty) [1].

[0] https://lichess.org/training/themes [1] https://lichess.org/training/fork

I enthusiastically recommend Chess Tempo (https://chesstempo.com/), which will give you interactive chess puzzles from real games that are tailored to your level. Someone else mentioned the similar system on lichess, which is also fine.

And if you are missing forks, you can choose to filter for only fork puzzles.

If I know a problem is “find the fork”, im in a complete different mindset from “find the best move”.

Because of that I doubt doing problems of the former kind will help seeing forks much when going back to “find the best move” type problems.

> “find the best move”

Before you can do that, you need to understand the moves you can make and their implications. I think identifying forks fit here.

The main way to improve at solving tactical puzzles - and at seeing tactical opportunities/threats in games - is to develop pattern recognition for the many tactical themes there are. Training on specific themes for some time is a very powerful way to do so. I'm experimenting with this approach on BraiMax Chess and results from users are very good - I'll publish some stats as soon as I get enough data.

I’m in a very similar position and it has been very challenging finding good resources — most feel like the “now draw the rest of the owl” meme after explaining how the pieces move.

I’ve been enjoying the Dr Wolf app, which mixes lessons, actual play against a very forgiving CPU opponent, and spaced repetition of mistakes.

I tried Chessable but the UI was awful and beginner/learning content was poor.

At chess.com you can search for exercises on both theme and rating (of the exercise). This means you can search for easy exercises on forks.

https://www.chess.com/puzzles/learning

"Chess: 5334 Problems, Combinations and Games" by Lásló Polgár, father of the Polgar sisters.

Tactical puzzles might be the better thing for you: https://www.chess.com/puzzles/rated

These are quick tactical puzzles, that adjust the difficulty to your level. Put in some hours, and you will spot obvious forks!

If you want to improve on specific tactical themes, including forks, you can use this for free: https://chess.braimax.com/play/focused_puzzle_rush

Disclaimer: I'm the creator of BraiMax Chess. Any feedback is welcome.