Using office storage solutions and now comic book boxes you must make sure you keep your comic books in pristine condition if you hope to cash in on their value in the future. Comic book collectors look very carefully at the condition of comics and grade them based on this. I will talk about grading in another post however to keep your comic books in good condition it is essential you find the right storage solutions.
You should use cardboard and back the comics before putting them into a folder that is correct for the size of comic. Most comics fit in an a4 folder with individual plastic pockets. Never put your comics into a damp storage area unless they are boxed correctly away from humidity and dont put them on the floor of the storage area they should be stored on top of shelves etc to avoid flooding and water damage. Comic books should also not be stored upright as this tends to mishape them.