Howdy all, I wrote the FixByProximity tutorials very basic so that people could follow along and learn while watching. It is certainly easier to know a bit before starting, however following along and looking things up has worked for a lot of viewers so far.
I would say to just start. If you keep waiting to "know more" then you will never begin. Instead, go as far as you are comfortable. Then go just a little farther. Then study until you are comfortable again. At that point start back up.
Anyway, your mileage may vary.