I've been a vegetarian for over 7 years and the most common obstacles I've noticed is 1. to get out of the mentality that a meal has to be meat, potatoes and a vegetable, and 2. to be willing to try different cuisines and ingredients you never even heard of. Whenever someone tells me that they're interested in becoming more vegetarian friendly I recommend the Vegetarian Times Complete Cookbook. It has two beginning sections on why go veg and nutrition, and then is followed by hundreds of recipes from breakfast to dessert. The recipe in Vegetarian Times strive to be healthy, so if that's a goal I would check out their magazine too. The Moosewood cookbooks are actually my favorites, but VT is a good introduction. Also the Moosewoods do not have any meat sections, only fish. ETA: Moosewood is a famous vegetarian restaurant in Ithaca, NY.