It depends on what level of styling we're talking about.
A lot of knowledge is openly available these days, but practical approaches and applications is something that can only be more fully shared and learned in hands-on type workshops. Believe me, if anything else, food prep and styling is insanely hands-on. It also not just the 'doing', but requires a lot of fore-knowledge and foresight for logistics preparation and planning. If you see some of the pre-production lists I prepare for clients, most people who never experienced it before can faint. Sit-down pre-prod meetings usually lasts a few hours.
In other countries, a course in Food Styling usually starts with a 2-3 year college diploma (degree) course in Food Technology as a foundation, and then goes on to styling itself. Of course, there are intensive 1, 2 or 3 day type workshops conducted by Food Stylists that ranges from US$1,000 - US$3,000 in fees but these also usually require some sort of foundation in food.
What would be great here would be a 1 - 2 day introductory course on food preparation knowledge and presentation for photographers, as opposed to a focused course for stylists, and that would probably cost much less - in the region of S$500 - $1K?
Yes there is..
I have saw one book on food styling in Choa Chu Kang Lot 1 Library.
If it's not within your reach, you can always send a request to the National Library (NLB) to transfer the book to your nearby NLB.