Specifically to answer your question – probably it’s better to take some course about UE4 for the beginners, there is one good (I’ve personally started with it) on Udemy: https://www.udemy.com/unrealcourse/ (it’s paid)
Also there are a lot of “getting started” tutorials in the docs: Blueprint Visual Scripting | Unreal Engine Documentation
The more common answer is the Blueprints is the same as “scripting” (programming, actually), it’s just have the different syntax (visual instead of textual).
The specific terms you’ve mentioned are common concepts across a lot of different programming languages.
You can just google them at first, it’s quickly become familiar.
If you didn’t had any programming experience before, you can look for some “novice” courses on almost any programming language to get those basic concepts (usually such courses are free).
Not sure if it’s answer your question, feel free to ask anything more specific in the comments.