Ooh, it's getting busy in here. Fabulous.
BumPop, a warm vegan welcome to you. Brilliant that you are convinced about going vegan, that's so great. My husband went vegan from omni overnight 14 years ago, found it super easy, no issues at all. I went vegan after five years of being vegetarian, and no issues at all.
I don't think you are being naïve at all, I believe anyone can do it if they are motivated to do so. Personally, I find veganism easy, and did from the start, I didn't miss dairy at all, and this was 14 years ago, when there weren't really cheese alternatives, and very little in the way of the vegan options we have now. I will do anything I can to help support you.
If you read any of the posts on the Gary Francione link I posted earlier, you may get convinced that vegetarianism is actually worse in many ways than eating meat, due to the volume of deaths and the amount of suffering in the dairy and egg industries. But do what you need to do if the end goal is veganism! :) Good luck.
Princess, I find houmous a great substitute if I want a quick snack. Houmous and a wrap, easy.
Cookbooks, there really are loads, and none I especially rate over another, though I'm not a big user of cookbooks so not really great for this question! I'd just buy a couple, they have so many recipes you can't go wrong. Or just use the Internet to research recipes.
PLGTS has good advice re reading up on vegan nutrition. You should get plenty of B12 if you consume vegan staples like fortified soya milk, and various other things like cereals that are fortified. I believe the average meat-eater has far worse nutrition than a new vegan, I'm very much of the belief that meat and dairy are actually very detrimental to our health, and that the meat and dairy industries have paid governments to perpetuate the lies. But the evidence is out there now that we don't need meat or dairy.
PLGTS, welcome back! Glad to have you here.