@godling - Not everyone learns the same way. There are many people who learn way better by reading instructions rather than watching a video. I myself am one of those people and have found that when reading answers on the answer hub or even forum threads I usually gain much more than I do when I watch youtube videos explaining things.
@op - Break what you want down into multiple pieces and try to do each one slowly adding on to the previous one. That was one of my biggest issues when trying to make an inventory system before there were tutorials for it. I actually got a white board and broke everything down into every small step and tried to figure out what you had to do first vs what naturally would be the last thing added to the inventory. I’m sure if you keep at it you’ll do great.