Veggie Boards has been a great resource for me. Overall, going vegetarian is not very hard, especially if you keep dairy and eggs in your diet. Of course, there are animal based products in random stuff like marshmallows, vegetable soups, some candies, and some of the most random things on the planet, but you get used to label reading.
Luckily, eating is the easy part! You have a wide variety of food available to you! Do you like to cook?