if u mean black and white then just find audino's in shaking grass
give the Pokemon you want to train an exp share then put your strong Pokemon first on your team and train on high leveled Pokemon the Pokemon with the exp share should level up by itself!
You can find high leveled Pokemon at sky pillar and victory road.
Pokemon black has exclusive Pokemon and an exclusive location called black city where you can battle trainers with high leveled Pokemon and you can catch reshiram, while for white version it has more exclusive Pokemon, a exclusive area called white forest where you can catch lower leveled Pokemon of the trainer's Pokemon and you can catch zekrom.
It evolves into Swoobat when leveled up with high happiness.
The easiest way is to give the Pokemon an experience share and train against high-leveled Pokemon. You could also just put them in the daycare and ride around on your bike. If you have access to red, put the experience share on the Pokemon and beat some of his Pokemon or the Mt. Silver Pokemon.
Machokes can be found in the wild in Mt. Silver or other high-leveled area caves. You can also catch a Machop and train it. Machops can be found in various low-leveled caves, such as Mt. Mortar.
It evolves into Swoobat when leveled up with high happiness. There is a Girl in Nacrene City who can judge your Pokemon's happiness. She lives in the Green Warehouse to the right of the Pokemon center.
it all depends on the Pokeball, HP, level, and the Pokemon for example, normal Pokeball - Low chance on a high leveled pokemon, but good on a low leveled pokemon Greatball - Really good on low leveled pokemon, but pretty decent on high leveled ones Ultraball - GREAT on low levels, really good on high levels Masterball - 100% also, with the Generation IV new pokeballs, it depends on time, location, and times captured(Repeat Ball)
Depends on the level it started with. If it is low leveled it will level up more than if it is high leveled. If it is high leveled it might not level up at all.
High leveled Pokemon are in the victory road and there are also a couple in the safari zone near lilcove city : ) Hope this helps
you need to have badges such as:rainbow badge makes all Pokemon up to lv 50 obey you.
36 or higher, but it will be hard to be high leveled if you're using many Pokemon.