How do I get to Trainer Hill in Pokemon Emerald?

Question

I know where it is I just don't know how to use it

Comments

You need to have the national Pokedex in order to use it. You can try reading this. https://bulbapedia.bulbagarden.net/wiki/Trainer_Hill

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You get the national pokedex
 after you beat the league right?

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yes
Also what do you mean by "how to use it"? You go in and try to get to the top. Do you want us to tell you exactly what buttons to press to get to the top fastest?

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I meant how do I use as in how do I get inside but you already told me

Answer 1

You need the national Pokedex to fight the trainers there.
source