Using the iFixit Marlin Screwdriver Set is easy. First, pick the right screwdriver for your task. If you're dealing with small screws, the Phillips #000 or #00 might be your best bet. For larger ones, the Phillips #0 or #1 could work well. The flat - head screwdriver is great for those specific tasks that require it. When using the screwdriver, hold it by the ergonomic, rubberized handle. The swivel top allows for easy rotation as you turn the screw. As for the case, you can use the magnetically - held lid as a sorting tray for your screws or as a stand for your device. When you're done, put the screwdrivers back in the case to keep them organized. To maintain your screwdriver set, keep it in a dry place. If the tips get dirty, you can gently clean them with a soft cloth. Avoid using excessive force on the screwdrivers as it might damage the tips or the handle.