Instructions
Place card dividers between each plastic page before using the folder. Some coin folders come with dividers, others don't, but it's easy enough to buy a pack from any office supply store. If the dividers are flimsy, it's a good idea to double them up.
Plan beforehand a rough arrangement of your coins on a piece of paper. You don't have to limit yourself to the obvious categories such as country or denomination. You might choose to group them by time period or by the themes evoked by the coins' pictorial designs such as presidents, royalty, landmarks and key historical events. Any grouping structure will work so long as the result is coherent and easy to navigate. If your plan breaks up the collection into small, distinct groups, so much the better, as this will tie in with Step 3.
Space out the coins when you place them in the folder rather than filling up each and every segment. This will lessen the likelihood of them rubbing against each other. Also, vary the pattern of distribution from page to page to avoid coins on opposing pages directly abutting one another. Doing this increases the chances of your coins being stored safely in the folder, but with a little effort these varied patterns can also be very pleasing to the eye.