I'm glad I could help you with this post, @philfromhongkong. In terms of advice for food, you have to try different things out for yourself.
Start by replacing bad habits with good ones, such as breakfast, 5 to 6 small meals a day and a great hydration (water mainly), then, as you train you will come across different ways to optimise your nutrition. Mine is closer to an alkaline diet these days, but I started with something close to the paleo diet.
I suggest getting in touch with a personal trainer specialised in the field of your sport to get the right tips, as well as following what makes sense to you.
Let me know how you get on. :)