[Other Question] I can't find Wild Pokémon

I've set some Pokémon to appear on a Route, but when I walk through Tall Grass, nothing happens, and I've tried watching Thundaga's videos, but on his the options are totally different from mine, and then?

Thundaga's videos are based on v17, a much older version of Essentials. A lot of the RMXP stuff is very similar anyways.
The wiki is a more recent tool for the changed stuff: http://essentialsdocs.wikia.com/

As for your issue, just to be sure, you do have a party, yeah? No pokemon appear if you don't have a party.

I already have Pokémon on Party, and I already set Wild Pokémon in the Wild Encounters option, but even so, nothing appears, and I tried to read the stuff on this Wiki, and I didn't understand anything either.

Anyone still to help me on this? So far I haven't.

Ok, I think I will have to give up, without the people to help me, I can't do anything and I can't go forward to making my game.

Are you using a new tileset or the default Outside one?
Does the Tall Grass have the Terrain Tag 2?

I don't know what Tag 2 is, I've been trying for hours a day and, I believe I solved it, but I don't know how, I just changed a few things in encounters.txt and in-game, and I don't know what I did differently, but it worked, maybe there was a conflict with the other Route 1 that already existed in Pokémon Essentials, and I created another one with the same name as my region.

Maybe you didn't have any Pokemon in your party when running through tall grass ...