Recommendations: play on Hard difficulty, (for more fun)
To start, do the basics, get wood and your tools, get stone and your tools, and finally get iron, after that do the most important thing, your pickaxe, then go to an Extreme Hill, or Extreme Hills + biome, and get emeralds. after that, do the same thing you do with diamonds, make armor, swords, pickaxes (etc.)
Pick up Sapphires gems
Make a Sapphire Sticks
Rubies! Get Rubies!
Make a Ruby Pickaxe!
Get lots of gold, because you will need it, let's go to the nether!
Watch the Nether, if you happen to see particles of flame, you will know what it is, Hellstone ore!
it's better to have lots of Golden Apples, and a efficiency V enchantment on your pickaxe, because it will be hard to mine hellstone without "burning to death".
After that, you can obtain the Magma Fragment. As you can see in the image: make the Magma Pickaxe and we will mine Hellstone again! You'll see what will happen...
After that, as you can see, you will get the Hellstone Fragment, with nine, the nugget, then you repeat the process and finally "The Ingot of Hell", Hellstone Ingot!
One of the most powerful items in the mod, Hell Flames Blade & Firestorm Bow, the two have the power, when an entity is hited, or hit by an arrow, to give the hellblaze effect and set the entity on fire, making a very powerful combo, however, does not work against bosses, since both the Ender Dragon and the Wither are immune to fire, and potions effects, etc.
A very abundant ore appears, what will it be? Exactly, Enderium Ore! There's not much to do with it, just the strongest armor in the game :)
A very important thing now, when you went to mine you probably saw a green ore, right? Hmm, very peculiar... Uranium Ore! In fact, you can only make the Obsidian Armor with him, making the Uranium Forge-Smelter!
You will need these exact items to make the Uranium Forge-Smelter.
(Bug: it is impossible to make the Uranium Forge-Smelter because in version 0.1.2 it is not possible to create the Titanium Ingot, this will be fixed in 0.1.3.)
Obs.: (To make the top item, just place the Titanium Ingot on a Crafting Table that will make 2)
Place 9 obsidians on a Crafting Table and you will get the Obsidian Fragment, merging it into the Uranium Forge, finally the Obsidian Core.
Finally, you will achieve immortality (or almost)...