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Getting 'under the hood' is the best way of doing it. Make copies of some files, open them up with notepad and have a look around. You should get the jist of whats going on (the column names are at the top of the files - usually first line or two).
The editor teached you nothing and creates more problems than it solves.
play around with them and you'll get the hang of them. Just remember to keep the originals safetly untouched.