One important aspect of prepping is building up a big pool of survival knowledge. I have a vast library of PDF files on everything from canning food to raising goats. This week I'm going to acquire one of these, so that no matter what all that knowledge stays at my fingertips:
http://www.solarmio.com/en/
If the power grid went down or Hussein takes over the internet you won't be able to access those files. Better to have them printed out.
While you’re at it, get yourself a nice aluminum case to keep it in so Obama’s EMP doesn’t erase it! :o)