[FrankW]

they can all by DIYed.

you can drain the brake fluid from one of the brake line at the caliper, but you gotta know what you are doing.

drain for the coolant is on the bottom of the radiator. probably better if you remove the bumper first so it's easier to work with.

oil change's just oil change.take off the underbody cover, drain the fluid, change the oil filter, re-fill the oil.

doing all these just make sure you have all the proper tools. if not or if you are not confident enough just leave it to a shop to do it. dealership always over charge you on labor.

I wouldn't do a coolant flush btw. a lot of times they use cleaners that are really abrasive in the system. you don't really want that to happen and causing future problems.