Many organisations publish starter kits for those who want to dip their toes or even their entire bodies into veg waters.
The Vegetarian Society (Singapore) just came up with its own: www.vss.sg/meat-less
Below are urls for some more existing starter kits:
Along similar lines, the Physicians' Committee for Responsible Medicine offers a video version of a 21-day programme for getting started with a vegan diet: support.pcrm.org/site/PageServer?pagename=21day_vegan_kickstart
International Vegetarian Union - www.ivu.org