Please rate my team and give feedback

Hi, im new to the world of competitive pokemon battling and need some help. Iv'e been playing pokemon ever since i was 5 but in the new pokemon world battling is not what it used to be with the likes of Ev/s and Iv's. With these new chances to increase stats, just a pokemons type does not determine how well it will perform in a battle.

So if anybody would like to help me and explain to me how Ev's and Iv's work and help me to perfect my team, it would be greatly appreciated.

My team currently consists of the following:

Salamence
Item: Life Orb
Nature: Naive / Naughty
Ev's: 232 Atk / 24 SpA / 252 Spe
Moveset:

~ Dragon Dance
~ Outrage
~ Earthquake
~ Fire Blast / Roost

Feraligatr
Item: Choice Band
Nature: Jolly / Adament
Ev's: 4 HP / 252 Atk / 252 Spe
Moveset:

~ Waterfall
~ Earthquake
~ Ice Punch
~ Superpower

Arcanine
Item: Leftover
Ability: Intimidate
Nature: Bold
Iv's: 30 SpA / 30 SpD
Ev's: 240 HP / 168 Def / 28 SpA / 72 Spe
Moveset:

~ Will-O-Wasp
~ Hidden Power Ground
~ Flamethrower / Fire Blast
~ Roar

Gengar
Item: Choice Scarf
Nature: Timid
Ev's: 4 HP / 252 SpA / 252 Spe
Moveset:

~ Shadow Ball
~ Hidden Power Ice
~ Focus Blast
~ Trick

Dragonite
Item: Choice Band
Nature: Adament / Jolly
Ev's: 252 Atk / 4 Def / 252 Spe
Moveset:

~ Outrage
~ Earthquake
~ Fire Punch / Superpower
~ Aqua Tail

Scizor
Item: Life Orb
Ability: Technician
Nature: Adament
Ev's: 4 HP / 252 Atk / 252 Spe
Moveset:

~ Swords Dance
~ Bullet Punch
~ Brick Breaker / Superpower
~ Bug Bite / Roost / Quick Attack

Please just rate and give me feedback please :)

Dragonite@Choice Band
252 Att / 6 Def / 252 Speed
Adamant Nature
- Extremespeed
- Outrage
- SuperPower
- Fire Punch


Please.

This way you aren't an inferior Salamence. CB Dragonite has 2 things CB Mence does not. 1. The ability to revenge kill with Extremespeed and 2. The ability to cover ALL steels (grounded and floating) by using SuperPower so it doesn't need to predict to soften up its checks and counters this makes spamming Outrage late game alot easier.

Salamence as a lead is a joke. It loses to everything and you aren't going to sweep turn one.

Replace Arcanine for Heatran please. Arcanine sucks in OU and you already have enough SR weak Pokemon. Heatran also gets Stealth Rock (something which you lack) and is also a good lead, again something which you lack.

Feraligatr once again is an inferior Gyarados and as a CBer Azumarril. Use Swords Dance/Aqua Jet/Waterfall/Return please with a Life Orb.

Scarf Gengar is pursuit bait x90000, get rid of it for a better scarfer or just not use a scarfer since you have plenty of priority to keep pokemon in check so a scarfer seems rather useless here, especially one as terrible as Gengar.

Thank you for the feedback, im gonna rework my team and post the revisions tonight