Considering learning food dehydration…

I actually initially was considering pressure canning to preserve garden and farmer's market stuf throughout the winter. However, it occured to me I might get by using a food dehydrator. The extra benefit of this being I can use it for my camping/hiking food as well.

So, I know little about this. Suggestions on a good book/site to get started? Opinions on dehyration for preserving fall harvest for winter use?

Also, opinions on this dehydrator?

Nesco american FD-61 Snackmaster

Thanks!