Tips for Brick Bronze;
Breeding; If you leave the 2 Pokemon in daycare for a long time, you could get two eggs!
Hatching; Walking with eggs for them to hatch can take a long time, but you can cut down the cycles by catching a Pokemon with Flame Body or Magma Armour. The more the merrier!
Hunting; Iso's Pokedex can help you find out where the Pokemon you plan on hunting is!
TMs; There's secret TMs in multiple places like Grass Knot and Sludge Bomb.