My suggestion was for trading.
If you are going to invest so buying and holding for years the best way is learning with youtube.
Start with videos about Buffet and Lynch.
Than focus on few companies and try to get every kind of info about the company and the manager, min one hundred of hours of research per company.
best book i can recommend for investing in shares
it certainly doesn't take hundreds of hours research per company. then when you've got the book, there is an old thread still kept alive on here. use both at the same time, it will complement the understanding of the book. it will still take practice, but there are few people who can write about a method like this guy
Honestly never got that interested in reading about trading, I love reading but the subject matter seemed kinda boring to me. I would recommend checking out websites like Babypips or looking for some good channels to follow on YouTube as those resources were a lot more engaging in my opinion when I was starting out. Good luck!