I'm a big believer in calorie counts not fat counts so... I'm guessing that if you are staying within your calories you'll probably be ok weight-wise (but be aware that too much fat - even the healthy kind - can be bad for your heart.) Welcome to the veggie lifestyle - it gets less confusing as you go along

There are so many ways to be a healthy, fit vegan that I don't think you should obsess about whether or not coconut oil will be a detriment. If you want to eat coconut oil, include it in your calorie count and let your macros work themselves out based on a varied and balanced diet. If you're like me and dislike religiously counting calories, I watch my macros and let my calories work themselves out (again on a varied and balanced diet).

For more general nutritional information, I'd recommend reading up on Brenda Davis, Jack Norris, and Ginny Messina. All three are registered dietitians and do a really good job of just explaining basic tenets or controversies of vegan nutrition and health without necessarily pushing a certain diet or eating plan. If you are informed about nutrition and mind what your body is responding to, I'm of the opinion that you'll be able to make the smart decisions for your health and weight loss goals.