You have gotten some great tips but I also wanted to offer that a great way to get started is to use a meal planning approach to help ensure you are meeting important nutrients. This blog can help you put that into practice -
Meal Planning Basics www.dailyspark.com/blog.asp?post=one_step_
If you start with your whole grains as the base of your plan it can help manage your carbohydrate meal contribution. This chart can also be helpful;
Carbohydrate-Counting Chart for People with Diabetes
A Single-Serving Reference Guide www.sparkpeople.com/resource/nutrition_art
Making sure you are getting plenty of protein can be tricky but it is very important especially when trying to limit ketones. This resource can help with that.
How to Meet Your Protein Needs without Meat
A Guide to Vegetarian Protein Sources www.sparkpeople.com/resource/nutrition_art
Be wise with your fruit selections and amount at meals and monitor their influence on blood sugar responses and use vegetables in a great amount to round out your meal. Even though you don't choose milk, use the dairy section of the meal plan to ensure you are getting important calcium sources. This resource might help too.
11 Dairy-Free Calcium Sources
No Dairy? No Problem! www.sparkpeople.com/resource/nutrition_art
Non-Dairy Alternatives to Cow's Milk www.sparkpeople.com/resource/nutrition_art