Long time SolidWorks user here with experience in other programs. Frankly, SolidWorks is one of the easiest pieces of CAD software to use, being much more flexible in how things are done compared to a lot of other programs. That said, it is incredibly powerful software, and while someone can learn how to use it in a week, it takes months or years to be actually proficient.

My big tip if you can't find a button there is always the search bar. Just search the command you are looking for, it will even show you where the button is located for next time. That said, they don't move things around that much from year to year, I'm surprised if you can't find a command in a tutorial made in the last 10 years.

The features you are talking about sound like you want to be doing surfacing, which is definitely a more advanced modeling technique that I only recommend trying to learn once you understand the basics and can predict how the software wants you to model something.