Can somebody advise me the best source if info re the best diet to follow n the xenical rules n guidelines etc? I've seen a few people refer to a book on it is there a specific book or site?
Look here
The basics are, no food with more than 5g of total fat per 100g and no more than 15g of fat per meal/45g per day. The less fat you eat the better, some people make the mistake of thinking you have to eat a certain amount of fat for the tablets to work.