Tear off the paper, leaving the tape on the end of the film. Make sure you have the spiral in the right direction, in this case, it would spiral out to the right.If you are right handed, hold the reel in your left hand with your palm up. Put your thumb and middle finger around the spindle. pull down the spring clip with your middle finger while at the same time, forcing the film end under the clip with sort of a pinching motion with your thumb and middle finger.
When you get ready to load the reel, hold the film, still rolled in your right hand, leader torn off where paper meets film, emulsion down and curve the film into a gentle arc across its narrow dimension. Then, press it into the clip as described above. When the film is fastened in the clip, use your fingers to feel from the outside of the reel to make sure the film is centered on the spindle, and relatively straight (THIS IS THE KEY) and as you roll it onto the reel, maintain that slight arc, which acts as a natural guide for getting the film into the slots between the wires. when you get to the other end, gently tear off the paper and guide the end into the reel with slight pressure on its edges, maintaining that arc as before. when the film is on the reel, you can feel along the outsides of the reel. If any film is sticking out, something is wrong. Also, it helps after the reel is loaded, to gently slide the film back and forth in its track a little to make sure it is where it should be. There should be a slight amount of give or play in the film. if it wont slip around a little or makes cracking noises, you may have a problem.
--sounds complicated, but takes much longer to explain in words than to actually do. If you practice a few times with a dummy roll while watching TV, you can get it easy.