I'd like to second the book Becoming Vegan - it's written by two dietitians and is CHOCK FULL of awesome vegan nutritional info, including sample meal plans, raising vegan children, etc.
Go to your library and check out some cookbooks - everyone has their favorites. I really like Vegan with a Vengeance (especially for bruch stuff and baking), Veganomicon is great for a little fancier, delicious meals, Vegan Planet is good so far (and huge!), and I also like The Vegetarian Meat and Potatoes Cookbook - lots of good "meaty" recipes in there (including how to make your own seitan). Vegan Lunch Box is also great for kid-friendly stuff, although it might be hard to find at the library.
Also, here are some links to check out:VegCooking.com
- good source of basic vegan cooking info, including some videos, lists of ingredients, "ask a chef" column, recipes, etc
If you're like me and you LOVE cooking shows, get your fix at Everyday Dish
- the left hand side has the videos, and the right hand side is the recipes. Sometimes it just helps to see someone cook something first, you know? Like how textures should be, and sometimes they throw in tips or tricks that are great to know.
Also, it's really fun to check out vegan food blogs. I have a link in my siggie to mine - and on the right hand side I have links to a bunch of other vegan food bloggers that I read regularly. It's a nice way to get ideas, recipes AND support for your vegan cooking! People are so awesome and supportive, you'd be surprised.
You can also get ideas and recipe reviews at The Post Punk Kitchen Forums
Oh, and just the other day I read 25 Money Saving Tips for Vegans
, so there are some ideas on how to do vegan on a budget. It can take some planning, but it's worth it AND totally cheaper than buying meat and dairy. You just have to watch the convenience food - like it probably costs $1 to make 4 veggie burgers from scratch, but you'll end up spending $3-5 on them if you buy them frozen at the store, y'know?
Good luck! You can do it!