All abstractions leak. You cannot work your jpeg photo collection but opening, editing, saving, editing, saving, editing, saving and then blame your tools when

All abstractions leak. You cannot work your jpeg photo collection but opening, editing, saving, editing, saving, editing, saving and then blame your tools when your jpegs are blocky and ugly. First you have to know some basics about lossy compressing and destructive editing. Then, you can understand what steps you really want to take. It's the same with version control systems. With git, first you have to understand what a commit and a branch is. Then, you can work.