TM's are short for Technical Machines. There are 50 TM"s in total. Each one contains a different move. Not every pokemon can learn every move. To use it, go to your item box and select that TM. Press A to confirm that you want to use it. Your pokemon menu will appear and will ask you which pokemon you want to use the TM on. Beware, though! Once you use a TM, it disappears forever. Teach the TM to a pokemon wisely. Below is a list of all the TM's.

TM 1 = Mega Punch TM 2 = Razor Wind TM 3 = Swords Dance TM 4 = Whirlwind TM 5 = Mega Kick TM 6 = Toxic TM 7 = Horn Drill TM 8 = Body Slam TM 9 = Take Down TM 10 = Double Edge TM 11 = Bubblebeam TM 12 = Water Gun TM 13 = Ice Beam TM 14 = Blizzard TM 15 = Hyper Beam TM 16 = Pay Day TM 17 = Submission TM 18 = Counter TM 19 = Seismic Toss TM 20 = Rage TM 21 = Mega Drain TM 22 = Solarbeam TM 23 = Dragon Rage TM 24 = Thunderbolt TM 25 = Thunderbolt

TM 26 = Earthquake TM 27 = Fissure TM 28 = Dig TM 29 = Psychic TM 30 = Teleport TM 31 = Mimic TM 32 = Double Team TM 33 = Reflect TM 34 = Bide TM 35 = Metronome TM 36 = Self Destruct TM 37 = Egg Bomb TM 38 = Fire Blast TM 39 = Swift TM 40 = Skull Bast TM 41 = Softboiled TM 42 = Dream Eater TM 43 = Sky Attack TM 44 = Rest TM 45 = Thunder Wav TM 46 = Psywave TM 47 = Explosion TM 48 = Rock Slide TM 49 = Tri Attack TM 50 = Submission

HM 1 = Cut HM 2 = Fly