Okay, I can hem someone else's pants, but how do you hem your own? Do you just guess, pin, put the pants on, and repeat until you get the right length to sew?
Google found: http://www.themodestman.com/how-to-hem-dress-pants/ which says pretty much this but makes it sound complicated somehow.
Might be a problem if you can't reach your feet, I guess.
I can sew on buttons though--easy enough really.