Hey, sorry for the late response to your message.
Anyways, you should first know the common Pokemon found in the 09 Metagame, including but not restricted to: Weavlie, Latia@s, Kingdra, Ludicolo, Toxicroak, Empoleon, Lapras, Zapdos, Garchomp, Metagross, Gengar, Abomasnow, Infernape, TR Teams (ie - Bronzong, Dusknoir, Marowak, Rhypherior, Slowking, Abomasnow, Glaceon), Heatran, Machamp, Gyrados, Smeargle, Togekiss, Cresselia, Azelf, Shedinja, and a bunch of other stuff. Those are probably the most common.
As for a team, there's three "main" teams I consider. Goodstuff, Weather, and Trick Room. Goodstuff is just basically a mixture of strong Pokemon with no synergy, but can easily take out threats. An example of this kind of team would be like Gengar, Metagross, Gyrados, and Latios. They don't really have any specific strategy, but their strong attacks and stats easily win games.
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