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Vim folks practice a lot. Like a lot a lot. They customize and use shortcut keys like crazy. (Yeah, maybe I'm stereotyping a bit.) If you're looking for a good after-basic-notepad environment, I'd recommend something more like VScode. Otherwise, if you've used plenty of other environments already and there's a specific aspect of Vim you're struggling with, maybe we have a better answer if given a more specific question. ☺ Happy coding!
Type vimtutor in your terminal and go through that tutorial to grasp the basics. Otherwise there are a lot of beginners and advanced tutorials which can be found online.
vimhacks101 book is good for learning vim.