This quick-reference PDF from Montgomery Schools covers basic tasks like cropping, resizing, and screen captures.
Most Paint.NET guides, whether PDF or online, focus on these core areas: A GUIDE TO USING PAINT.NET - CDV paint.net user manual pdf
Located under the Effects menu:
Paint.NET supports third-party DLL plugins. Drop them into Effects or FileTypes folder. Recommended: and screen captures. Most Paint.NET guides
"The Move tool selects the whole layer, not the object." Solution: You have no active selection. Make a selection (e.g., Rectangle Select) around the object first. Move tool respects selection boundaries. whether PDF or online
If you are searching for a manual, you likely want to learn the core features fast. Consider this your mini-PDF manual: