For low cost gear ideas:
Dirtbagging and deal shopping.

Even a a few overnights in someone's back yard (some of those in bad weather) will gain you some experience. You don't want to be setting up your shelter for the first time on a dark and stormy night with flashlight in one hand and dripping wet instructions in the other!

Another good article on the "Sgt. Rock" site is this one:
Staying Warm.
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey