When you build things with blueprints, break them down into separate tasks. Start with the most basic things, and slowly build on it. When I started with inventories, dialogues, skill trees and many other features you’d find in most mmo/rpgs these days, it took hours and hours of bashing my head against the wall to learn how to get through them. Looking back though, it was a good experience and now all these systems are really easy.
Twin is right in that time and practice will make a huge difference