Before you attempt to put film into a 35mm camera, it's important that you know how the process works. To begin with, make sure the camera has been set in the proper mode for loading: usually this is indicated by an icon or symbol of a film cassette on its back panel. Once ready, open up the back of the camera and remove any existing film if there is one inside. Then take your roll of 35mm film and hold it so that it can easily be fed into the left side of the chamber. With your fingers lightly pull out enough leader from each end to ensure it fits securely across both spools inside; then carefully insert it into place and close up the cover again. Once secured, advance your frame counter dial to 1 and give a gentle wind on its winding lever to prepare for shooting!