If you don't know about EVs and IVs and such, you'll wanna take a look at this:
http://www.serebiiforums.com/showthread.php?499840-A-basic-guide-to-EVs-IVs-and-natures
Items and abilities are also an important part of battles.
Choice Scarf is the usually the best item for Typholsion, so it can quickly get off a full power Eruption. Having an extra Fire attack is actually a good thing in this case, so Typholsion still has a useable Fire attack for when its HP is low:
-Typholsion w/Choice Scarf
Nature: Modest/Timid
Ability: Blaze
EVs: 252 Sp.Attack, 252 Speed, 4 HP
Moves: Eruption, Focus Blast, Fire Blast, Extrasensory/Hidden Power Grass or something
Rampardos isn't all that great in Singles btw. It's a ♥♥♥♥ing beast in Rotations though. Anyway, you don't wanna use a special attacking set unless it has Sheer Force; otherwise, stick to physical attacks:
-Rampardos w/Choice Band or Life Orb
Nature: Adamant
Ability: Mold Breaker
EVs: 252 Attack, 252 Speed, 4 HP
Moves: Head Smash/Stone Edge, Earthquake, Zen Headbutt, Superpower/Crunch
Ferrothorn has awful Sp.Attack but has good defenses, so you'll wanna make use of that:
-Ferrothorn w/Leftovers or Rocky Helmet
Nature: Relaxed/Sassy
Ability: Iron Barbs
EVs: 252 HP, 48 Defense, 208 Sp.Defense
Moves: Gyro Ball/Thunder Wave, Power Whip/Protect, Stealth Rock, Leech Seed
Don't use Thunder Wave and Gyro Ball together.
Starmie is a decent Spinner and/or special attacker:
-Starmie w/Life Orb
Nature: Timid
Ability: Natural Cure
EVs: 252 Sp.Attack, 252 Speed
Moves: Hydro Pump, Psyshock, Thunderbolt/Ice Beam, Rapid Spin
or
-Starmie w/Leftovers
Nature: Timid
Ability: Natural Cure
EVs: 248 HP, 32 Defense, 4 Sp.Attack, 224 Speed
Moves: Scald, Recover, Psyshock, Rapid Spin
Braviairy is kinda outclassed by Talonflame and Staraptor, but if you wanna use it, just swap Crush Claw with Rock Slide for better coverage.
Clefable's pretty boss, iirc:
-Clefable w/Life Orb
Nature: Bold
Ability: Magic Guard
EVs: 252 HP, 252 Defense, 4 Sp.Attack
Moves: Moon Blast, Calm Mind, Fire Blast, Moonlight
or
-Clefable w/Leftovers
Nature: Calm
Ability: Unaware/Magic Gaurd
EVs: 252 HP, 132 Defense, 124 Sp.Defense
Moves: Moonlight, Moon Blast, Aromatherapy, Ice Beam/Fire Blast/Toxic
So, let's start with that and see what you think and what questions you have.