Courses and guide for begginers

Hey all. So I have tried affiliate marketing and did t do well.i feel like I missed some very important stuff about it. I decided to start again from begging. I'm looking for some free courses and guides to learn again. I'm not looking for quick schemes to earn I want to take time and learn. Any info will be good. Tnx

Hy i think its a good idea to go to youtube amd search for sucvesful affiliate marketars by searching how to make money with affiliate marketing
Study their videos see what they do etc
The thing its that in the beginning you need to combine it with hard work ,learning all the time ,consistency etc and never give up