I had troubles making my first base or world or whatever and here are some tips on how to get started
When you start, press ESC and go to options and click Peaceful. This means theres no monsters to kill you.
When you look for a base, theres a couple things you want to look for: Trees(For wood, a big Mountain(For coal), Sand, and water but its not required
Before you start your base, gather maybe 40-64 of Wood and Dirt. This will give you tools for mining and digging. And maybe 10-20 coals if you can find a mountain.
Sand and Gravel can fall on you when your digging and can suffocate you
If your mining and it goes to night time and you have no torches I would recommend waiting it out because you can't see anything and can get you lost easily
Place torches all around your house or base, this way you can see it easily.
Don't wander off to far from your base or you'll get lost.
Go to Minecraft Wiki for crafting recipes and information
If your going to hunt for items, change to hard and get lots of meat from Pigs and if your patient you can cook it for more health. I would recommend a sword if you don't have a arching post, which is basically a place high in the air where you can shoot arrows at monsters.
In the day time explore, mine, get wood and materials, during the night work on your base.
Make a couple chests with specific items in each one, like in once you put all your tools and one you put all your wood.
Get a workbench. To do this put 4 logs(I don't know what they are called) in the 2x2 square and when you place it and right click you have a 3x3 crafting square. To get logs(idk) you put wood on the crafting box.
Make plans for what your going to do EX:
Umm I might get some wood in the day, im running low and I need some more tools, during the night I might go and touch up on the looks of my base.
Before you go and work, put whatever you want to cook to cook and when you come back it'll be done. Remember to put enough wood. If I remember, wood burns for 15 seconds and coal burns for 30 seconds?
Here are some things you always want to carry with you:
Workbench
Shovel(1 or 2)
Pickaxe(1 or 2)
Axe/Hatchet(1 or 2)
Meat
Dirt(So lets say you fall into a hole, you can put dirt under you and get out)
Torches
Furnace
Chest
^My opinion^
Teh end, remember I started 1-2 days ago so I don't know very much but I'm learning.
Correct me politely if theres an error ^_^
V-2 - Tips on Mining
If your going to make a mining shaft inside your home, make sure to make a skyview. A skyview is basically when theres a hole in the top of the shaft thats sealed with glass, which lets in a lot of light.
Never ever mine straight down. You will get fucked eventually by lava.
Mine in layers and remember to put torches and ladders or someway of getting out
Like I said, watch videos on youtube. You will get lots of ideas from people. MachinimaRealm is a great place for minecraft videos.
When you fall into underground caves, set up torches so you can look around. You usually will find some coal or iron.
If you come across Lava, put a rock and you will have to move left or right and mine down again. This is the worst situation possible because your skyview has no purpose anymore.
This guy made a great series(40+ episodes) on minecraft. In the beginning hes a bit of a noob but in the end hes very informative,creative, and entertaining. Heres the first episode:
Stone tools are the best tools in my opinion(to start out). Stone is litterly everywhere and they are pretty durable.
For minerals higher then Iron, you need a Iron Pickaxe to mine it. Gold, Diamond, and Redstone are examples.