there is a removal section on here that has a lot of info and pics. this year i have been fortunate to get lower swarms. if they are more than 15 ft, i pass. that's the hight my poll pruner will reach from the top of my ladder.
i take a 5 frame cardboard nuc with one frame of drawn foundation in it. i save a few frames from year to year just for swarms. a tarp, pruners, some screening and duct tape, sugar spray with some lemongrass oil in it. guess that's the main stuff. swarms are pretty easy most of the time.
a bee vac would be nice, but i don't have one yet. it's on my list........