Hello Simone,
Thank you for your kind words about the article.
Per your question about self-study websites on research basics...there are some. However, if you read through this extended comments section you can see my recommendations for how to proceed from here on out. In short, I recommend you spend some time getting to know who you are as an investor. Said another way, "How do you see the world?" One way to explore the answer to this question is to read books by some of the great investors and see which ways of viewing and seeing the world are close to your own. You are trying to find a solution. Namely, what skills may I develop that exalt my unique consciousness? And what tools can compensate for my weaknesses? After you have an in-depth understanding of the answer to this question then you can begin to self-teach yourself some of the necessary skills.
I hope that helps!
Jason