Does anyone know where a guide is to: How natures affect your pokemon, which pokemon makes a good team, which natures should be used for a certain pokemon, which moves should you teach a certain pokemon, and how to EV train?
I'm trying to get into competetive battling, but I won't be able to unless I know all of this
First, check the
Compiled Guides. But I'll see what I can answer.
How natures affect your pokemon
Each Nature raises a stat by 10%, and lowers another stat by 10%. For example, Jolly raises Spe and lowers SAtk, Modest raises SAtk and lowers Atk, and Bold raises Def and lowers Atk. For more Natures, refer to
this handy guide.
which pokemon makes a good team
This is difficult to answer, as there are a number of ways to go about team building. Some prefer offensive teams, some use the tried and true 'walls n' sweepers' teams, and still other use stall teams (although they're rarely used anymore). It's all about selecting Pokemon that do what you need them to do, and who counter what you need to counter. Just remember to keep things balanced- keep your team as varied as possible, so you aren't completely wrecked by every Pokemon ever. Check
Smogon for a resource of Pokemon.
which natures should be used for a certain pokemon
If you understand your Pokemon, and understand natures, this should be easy. For starters, let's say you have Gengar. He has a good Speed and SAtk going for him, so avoid -Spe and -SAtk natures. Looking at his stats, you can see his Speed needs the largest boost- he isn't bulky, so he doesn't like being outsped. Of his stats, you can see that his Atk will be used the least, so Gengar won't miss it if it's gone. So, go with a +Spe, -Atk nature: Timid! Of course, a Pokemon's Nature should depend on the set it runs (for example, Choice Scarf Gengar runs Modest for the added power).
which moves should you teach a certain pokemon
It depends on what you want that Pokemon to do. Generally, though, you want to cover as many types as possible- although packing a specific move for a specific Pokemon isn't always a bad idea (there's a reason why everything carries Ice Beam or Hidden Power [ICE])
Compiled Guides, yo. Don't worry, it;s easy to understand.