Skyblock Survival Rules
Start on a tiny floating island. Initial resources: 1 tree (wood+sapling), 1 lava (cobblestone generator+fuel), 1 dirt, 1 ice (melts to water). Expand the island, acquire new resources, build automation. Classic goal: from nothing to a sky empire.
Recommended Bedrock Seed
Seed: i (single letter, Bedrock 1.21). Spawns on 3x3 grass floating island at Y=100. Adjacent island with 1 oak tree. Lava 15 blocks below. Scout in Creative, then switch to Survival.
Warning: First priority: infinite cobblestone generator (lava+water). Then infinite water source (2x2 pool). Step by step automation from there.