One of the best ways to learn is by BREAKING THINGS... much the same way as I learned how to use Windows. A wise man once told me "If you can learn from YOUR mistakes, you are pretty smart, but if you can learn from someone else's mistakes, you are a genius!"
I think that depends on the mistake, Spatry. I once cut-and-pasted my entire C-drive (ie. all the contents of my C-drive. Files, Folders, EVERYTHING) from my "C"-drive over to my "Desktop". And just by doing that, [and ONLY that,] I SERIOUSLY
messed up my computer. (And it took more than just a simple "Hard-Drive-Crash Recovery Disk" and "System Boot Recovery" Disk/Floppy-Disk to get my Windows 98 computer back in working order (let alone PROPER working[/running] order).
After that I decided "never again
" will I mess with something without knowing what it does beforehand and/or what it will cause [to happen] on my computer beforehand ("beforehand" in this latter case as-in "before I actually start doing it").
It's just too much risk.