The essential books for the DM:
Player's Handbook
Dungeon Master's Guide
Monster Manual
Dice (I recommend the following: 1d20, 5d4, 10d6, 5d8, 2d10, 1d12)
The essential books for each player:
Player's Handbook.
Dice (I recommend the following: 1d20, 5d4, 10d6, 5d8, 2d10, 1d12)
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Books you do not need to start but would be very helpful:
A campaign setting book. I would buy The Forgotten Realms Campaign Setting (FRCS) or Eberron.
A first level adventure. You can download one for free from the Wizard's of the Coast website. Or you can buy one. I believe both the FRCS book and the Eberron book include first level adventures.
A DM screen. Nothing beats having a screen to hide your die rolls from the players. Screens usually are packed full of useful charts and info so you don't have to look them up in the books during play.
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I would start out by playing a couple of test games until you and the players feel confident. Then I would use one of the campaign setting books and run games in an established world. It will save you a lot of world-building time. Once you have more experience as a DM you can experiment with different campaign settings or even make your own.
And don't be afraid to use this board as a resource to answer questions and help solve problems you encounter. Most of us on this board are veteran players and we are more than happy to welcome you to the community and offer you all the advice you want!
