Until you reach 80 bricks, your only way to get gold bricks is to make random worlds. When you reach 80 you can utilize coordinates to locate certain biomes and areas, and when you reach 100 bricks, you'll be able to create worlds based on the biomes you unlocked, and size it from small, medium, large, and huge. And continue to DISCOVER EVERYTHING, while opening a few chests from here to there. Keep a lookout for the items and animals in each biome.
Now, this part is where everyone's voyage will be different.