Ok, let me run you through this real fast:
You google "investing", you read a lot, you youtube "stock investing", you search for relevant courses online, and in the meantime you pick up bits and pieces of valuable information and valuable sources and learn to discern them from sh*t ones... do this for years and years. Browse amazon, you'll find enough lectures. Finance studies wouldn't hurt either, at least so you know how to read financial statements, and what's a "share", but you can learn that elsewhere as well.
Meanwhile, you trade, than you invest, you loose some, you gain some, you learn what works and what doesn't. Do this for years and years as well.
Than, if keep at it long enough, and manage to not loose everything, despite marketing coning, shit advice, misguidance and at times shaking hands, you eventually "git gud".
No problem bro.