The first thing is to start with basic techniques, not complicated recipes: learn how to make a decent sofrito, how to sear meat, how to cook pasta al dente. YouTube has amazing channels where you can see exactly the movements and timing, which you don't get the same way from a book. After that you can gradually increase the difficulty, but honestly for the first few months focus on mastering the simple stuff - a good rice, sautéed vegetables, a roasted chicken - because confidence builds that way.
Is there any kind of food that catches your interest? Because starting with what you actually enjoy cooking makes all the difference in keeping the motivation going.