Once you’re ready to start a game, it helps to know how most players organize the battlefield.
Start with your library (your deck).
Give it a good series of shuffles and let your opponent cut it, if they wish.
Then place it off to the side, with enough space near it for your graveyard.
To start the game, you draw seven cards from the top of your library. This is your opening hand.
In your opening hand, you ideally want a mixture of lands and spells, if you are lacking one or the other,
you may wish to "MULLIGAN".
Many players put lands nearest them on the table, with other cards closer to your opponent.
This way, both you and your opponent can clearly see what cards are on the battlefield,
and your creatures are at the center of the action.
Other cards on the battlefield, like artifacts or enchantments, are usually placed off to the side
of your creatures.