There are a number of sources of information on the internet regarding irritable bowel syndrome. The following are recommended, well-respected sites: 

1. National Digestive Disease Clearing House

2. International Foundation for Functional Gastrointestinal Disorders

3. IBS Self-Help and Support Group

4. Medline Plus

5. American Society for Colon and Rectal Surgeons

6. Irritable Bowel Syndrome Association

7. Mayo Clinic

8. Help for IBS

9. IBS Chat

Selected articles from the author that you may be interested to read:

An update on the IBS therapy
Irritable bowel syndrome: an update on therapeutic modalities

Role of mast cells in gastrointestinal tract
Mucosal mast cells are pivotal elements in inflammatory bowel disease that connect the dots: Stress, intestinal hyperpermeability and inflammation

Role of mast cells in gastrointestinal inflammation
Reduced immunostaining for c-kit receptors in mucosal mast cells in inflammatory bowel disease

The effect of stress on the gastrointestinal tract and the role of mast cells and the brain-gut-axis
Heightened responses to stressors in patients with inflammatory bowel disease

Role of intestinal barrier in health and disease
Intestinal barrier: an interface between health and disease

Relevance of sleep and chronic inflammation
The relevance of sleep abnormalities to chronic inflammatory conditions