Cliveh is right: much easier to load a film on a reel when you can fix the leader in the spiral by dayligt. When your camera doesn't have a manuel rewind option: there is a special tool made for getting the filmloader out of a cassette without destroying it.
Then you will probably need something to store your nagtives into. I use pergamin paper sleeves that fit into a four ring binder, but there is a multitude of options here.