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elo, im new here but i am kinda veteran on pkmn but until now i've realized that i don't know a crap about it really
so im kinda wondering,
what's up with the pokemons natures??
Also i am kinda confused with all thoose new moves, items and tm's..
what should i learn my pkmn? Please help me out

My main pkmns is:

Empoleon, lvl 83. Calm nature. Loves to eat and likes bitter food.
ab:Torrent
Hydro cannon 7/7
Brine 10/10
Shadow claw 15/15
Avalanche 10/10

Straptor, lvl 58. Impish nature. Highly curious and likes sour food.
Ab: Intimidate
Brave Bird 15/15
Close Combat 5/5
Fly 15/15

Probopass, lvl 53. Quiet nature. Proud of it's power and likes dry food.
Ab: Magnet pull
Magnet rise 10/10
Discharge 15/15
Stone Edge 7/7
Gravity 5/5

Mismagius, lvl 45. Quirky nature. Likes to run and happily eats anything.
ab: Levitate
Dark pulse 15/15
Psychic 10/10
Pain split 20/20
Shadow ball 15/15


I'm Building my team up but tell me if i should have other pkmns, other moves, other natures, in battle- combinations ect ect.

Natures increases/decreases a stat by +/- 10%. They're really useful since you could sacrifice a stat that a pokemon does not need and increase another that it does need. You can find more information here:

http://www.pokemongts.com/showthread.php?tid=12353

Empoleon has a good nature but doesn't have the moveset to work with. Try this:
Item: Leftovers
-Yawn
-Stealth Rock/Grass Knot (keep stealth rock if you don't have any other entry hazards)
-Surf
-Ice Beam

Starpator:
Item: Choice Band (jolly) / Choice Scarf (Adamant)
Nature: Jolly/Adamant
Moveset:
-Brave Bird
-Close Combat
-Return
-Pursuit

Question:
In what areas did you EV Train in?

I haven't worked with the other two, so i wouldn't know what movesets would be good for them. But it seems as if you need another reliable wall/supporter/tank such as skarmory, blissey, miltank, snorlax, dusknoir, spiritomb, bronzong, etc. Probopass has high defenses but due to two crucial quad weaknesses to ground and fighting (very common move types), he can be easily OHKO by the likes of Garchomp, Heracross, Lucario, etc. (especially Garchomp)

Probopass, lvl 53. Quiet nature. Proud of it's power and likes dry food.
Ab: Magnet pull
Magnet rise 10/10
Discharge 15/15
Stone Edge 7/7
Gravity 5/5

the nature should be sassy or relaxed because of its high def and sp def stat

Mismagius, lvl 45. Quirky nature. Likes to run and happily eats anything.
ab: Levitate
Dark pulse 15/15
Psychic 10/10
Pain split 20/20
Shadow ball 15/15


The nature should be modest or timid to boost its sp atk and speed