Hey 
Did you ever work with a programming language?
Because that’s basically what Blueprint is. It uses exactly the same logic and the same structure. Without at least knowing the basics of that it will be very hard to properly learn blueprint to an extend where you can actually create solid gameplay…
Personally I would suggest learning java as it’s the go to language is with a whole lot tutorials of all different sorts and probably one of the best to teach to yourself. A more direct approach would be learning C++ as you can directly use it later on for UE4 as well.
If you plan on doing mainly artistic stuff like models, materials and so on you can just watch the Unreal Engine tutorial videos (as linked above). They are about enough to get you started and should provide you with most knowledge to do simple things. Though there is no way around a programmer or properly learning programming if you want to create something remotely serious.
I hope this helps. Probably not quite what you hoped for but there’s no real way around programming for a game 