Social Anxiety Self-Help Resources - Information Sheets & Workbooks
www.cci.health.wa.gov.au
Self-help resources for addressing social anxiety, written by clinical psychologists at the Centre for Clinical Interventions in Perth, Western Australia.

This workbook is great (if you have the discipline and patience to take yourself through all the modules, which applies to everything in life).

Even just browsing it teaches you a lot and gives you an idea of how social anxiety is addressed. I hope you find it useful!