Yes I agreed with you that as a beginner, it's better to focus on a single coin to learn about that approach and then add coins gradually once some experience has been acquired
Not focusing on one coin but focusing on market analysis lessons. If you can learn it, you will have no problem analyzing any coin because they all use the same analysis. And if you have managed to learn about the analysis, you can try to analyze some coins to trade. You can start earning, which is the effort to make dreams come true. And not many people have succeeded in learning to analyze so it is still wide open if you are serious about learning.