1Never dig straight down
2Never take your valuables to the Nether
3Bring a shield at all times
4Leave faraway chunks unloaded
5Bring a fire resistance potion to the Nether
6Write down the coordinates of your house
7Look out for loot in structures
9Don't break mob spawners
10Always keep a Totem of Undying in your left hand
11Write down the coordinates of your portal
12Once you get wood, craft a wooden pickaxe and skip the other wood tools. Use that wooden pickaxe and mine the cobblestone and you get a stone sword easy peasy.
13Get 2 of each friendly mob
14Put a bed in your stronghold and set a respawn point before going into The End
15Take all the wood from a tree
16Right click to "use" an item
17Don't make light with redstone torches
18Make sure to bring projectiles in the end fight or you'll have to take out the end crystals by hand
19Don't go near gravel in the Nether
20Make a villager breeder and use villagers for armor and other useful things
21Wear a carved pumpkin on your head in The End so the Endermen don't attack you
22It's faster to use a shovel to mine clay
23Remember that water doesn't work in the nether
24Don't stay in the water for too long
26When you mine an ore and it will burn, build a fire-proof platform