Download Minecraft 1.5.2
This game at first can seem boring in the first minutes of the game, but it's worth it to play for a while. To make the first tools, the first to produce diamonds, cook the first food and it is likely that the game will absorb you completely.
besides, the world of Minecraft is not in place, developers create new mods, new textures and resource packs with shaders, which are able to convert the already saturated world of minecraft beyond recognition.
All you need now is to download the game client Minecraft 1.5.2 and start playing. At first it will be difficult and unusual without knowing the crafting recipes, but over time you'll settle in and be to do everything on the machine. Good luck in all quests :)