Well, if I use a regular condom, it requires some vigorous effort to get on and off my wang.
First I have to get a good 2-handed grip. Fortunately, the outer parts of the head remain soft even when erect, so this part it easy. Then directly below is the girthiest part, which requires me to force downwards with both hands and mantain constant pressure to avoid a rollback. Then, I hit a mild taper, and it will basically unroll itself.
Taking the condom off while hard is miserable, so I wait until I've gone down a bit to ease it off. After that, I typically will dispose of it in the most sanitary way possible, knotting, then covering in tissue, then placing deep in the trash.