I feel that paper is an underrepresented mechanic in puzzles, so this puzzle explores the many facets of this subject. It's (almost) all lovingly handmade, so please excuse any errors.
Your final answer should be a single word that describes this puzzle.
(This is my first metapuzzle so constructive criticisms are welcome!)
Hint 1: Still no progress? Perhaps you don't know where to start. Here's ranking of the difficulties of the puzzles from easiest to hardest:
1, 4, 3, 2, 5