1 trash can about 17" inches at the rim.
2 or 3 tire irons 14" inches long
1 bead buddy (not a necessity)
WD-40
Leverage
Off......
Front wheel lay disc down in trash can. Rear wheel lay sprocket down in trash can.
Remove inner valve stem, lossen rim lock nut to last thread, and push in to unseat, push on tire around bead and spray a little 4D. At two inches to one side of the rim lock push the bead buddy in and lock against a spoke, now start working just about opposite of the bead buddy and rim lock with the first tire iron, work towards the rim lock, spooning one iron at a time, on side of tire bead at a time, remove bead buddy.
Take nut off of the tube valve and push through rim with both hands a pull it up and out removing the whole tube.
Starting again opposite of rim lock (with no bead buddy) start the spooning again until tire is off.
Now, once I am this far I remove any grim and such off the rim/bead with a wire brush.
On......
Spray a little WD on the rim, install first tire side bead behind rim lock and push tire on until you can't get any more with muscle. Now place one tire iron in the bead and flip it to the outside, (I usually stick it between my legs and crotch "yes crotch" to hold it into place) then use the other iron to work the bead on. Install tube valve stem into hole and screw nut into place, tuck the rest of the tube into tire. Opposite of the rim lock push the tire onto the rim and shove the bead buddy into place working towards the rim lock on both sides, push the rim lock into the tire and set the last bead of tire.
Istall valve into the valve stem and fill with air (max to seat bead). remove stem again and let most of the air out, inflate to personal preference and tighten both the rim lock nut and valve stem nut.
People may have other ways, but this takes me about 15 minutes start to finish front or rear.