1. Well if you want to play online, and be successful, you're going to have to take EVs/IVs into consideration.
2. Attack Stat = physical move, Special Attack Stat = special move
Defense Stat = resistance to physical move, Special Defense State = resistance to special move
Speed Stat = The order of turns, faster Pokemon go first
3. Fury attack will hit two to five times in a row within 1 turn and has 15 power each time. So 15 x X amount of hits
Uproar will lock the Pokemon using it into the attack for 3 turns with 90 power each time.
4. Side benefits are nice, but are unreliable if they don't always occur. It's better to use a move like Toxic, which will always poison, over a move like Smog, which deals damage but will not always poison.
You will generally want to match physical moves with high attack stats and special moves with high special attack stats. You will want STAB (Same type attack bonus) moves, but also coverage moves. There are also priority moves, which will always go first, no matter the Pokemon's speed. If both Pokemon use priority moves then it goes to the higher speed stat.
Example...
Charizard
Fire Blast 120 power / 85 accuracy / 10% chance of burn (STAB)
Air Slash 75 power / 95 accuracy / 30% chance of flinch (STAB)
Hidden Power Grass 60 power / 100 accuracy (Coverage)
Focus Blast 12 power / 70 accuracy / 10% lower special defense (Coverage)
"On my business card I am a corporate president. In my mind I am a game developer. But in my heart I am a gamer." - Satoru Iwata
