The hand-me-down MacBook Pro that was given to me to use at work had an international keyboard with all my favorite keys in strange, scary places. I replaced it with a red-blooded US layout, and all is well. Americuh!
The iFixit photos and instructions made it easy. The terrain would have been as difficult and unfamiliar as the mountains of Afghanistan, but thanks to iFixit, it was as easy to navigate as a slice of apple pie.
There are a number of different types of screws. I taped a sheet of paper to my desk, and each time I removed a new type of screw, I put it in a new pile and wrote next to it on the paper a description of the screw. For example: 3mm Torx. By the end, I had a neat column of screw piles, next to a column of handwritten descriptions. Very handy.