you heat until it turns into a puddle that gets sucked into whatever you're trying to solder.
I use desoldering wick to desolder. You lay it ontop of whatever you're trying to desolder and heat it until it sucks the solder in. There are better ways but a wick is cheap
Desolder wick is fucking gay, I hate it like i hate you.
I really only use solder suckers now. Wick braid is only useful where a sucker tip won't fit.
In my opinion, you only need 4 things to desolder/solder well:Good solder (63/37 or 60/40 work tits for electronics, but not very strong)
Flux
Solder Sucker
Decent iron/gun with the right CLEAN tip; I use a weller 100w for brute force, and a cheaper 5-30w adjustable for everything else (chrome-plated tips last
forever)
THis coming from a guy who's done everything from $70 R/C batteries to 44-wire PS2 chips. All PS2 chips require a few wires to the dvd drive chip, which has micro pins like that '101' video's QFP .5 pitch chip.
FYI if you want to 'cheat' based on that '101' video, USE FLUX. I always use a dab of flux paste on wires, and it makes shit so much quicker. You spend a little more time cleaning up, but its worth it.