Hmm... this may take a few posts...
Well, first, you shuffle the deck, and have your opponent cut your desk, and you his.
Then draw 7 cards, and choose to eather keep your hand or put it back and take 6 cards.
Then, if you go first, play a 'basic land' card.
The 5 lands are: plains, mountain, island forest, and swamp.
You need basic lands to 'tap' (Turn on it's side) for mana.
The 5 basic colours of mana are, in the same order as the lands; White, red, blue, green and black.