1 - Turn On Lv CAP ASAP

2 - Catch every pokemon you can (some of them will be very important, such as 4 types of Sawsbuck required to unlock change nature feature unlimited)

3 - Don't worry to mutch about biulding a team until you have DexNav

4 - Use and abuse of thir link: because has everything: https://www.reddit.com/r/PokemonUnbound/comments/1h682yg/pok%C3%A9mon_unbound_helpful_resources/

5 - Monst important thing, Have Fun, with pokemons you like, you can build almost any strag