Flash Drivees

I use flash drives to save everying on a particular subject or to save every thing on my computer
Becausee of some problems I have had with my computer I I plan ondownloading everything I have on my computer onto a flash drive. Lets say two weeks from now I have added a number of new things. The way I plan on handling it is totake a new flash drive and download everything again. Then delete everything on fthe first flash drive and have it ready for the next time I want to up down load every thing on my computer including the new stuff. This was I use to the two flash drives to back up everything I have on my computer.

Would like comments on the way others handle it.. Thank kyou