basically mine as much iron and coal as possible to get to level 5 mining and then you can access the deep caverns, after that go to the diamond reserve and mine a bunch of diamond, before the diamond mine, theres the emerald mine where you can get a load of slimeballs and stuff.
to get sugar cane, go to the wheat area of the hub, in one of the corners then farm enough wheat to go to the
barn. when you're here, farm as much material as possible to get your farming level up so then you can go to mushroom island. at mushroom island there is sugar cane that randomly spawns every few seconds, then with that sugar cane you can craft yourself a sugar cane minion to do it for you. you can also craft your own slime and diamond minions, although the slime minions do damage to you, so you might want to put them in a 5x5 box so they cant escape to your island