Join your local Chamber of Commerce.  We have found ours to be a wealth of information and support.

East Renfrewshire - http://www.eastrenchamber.org.uk

Renfrewshire - http://www.renfrewshirechamber.com

Glasgow - http://www.glasgowchamberonline.org

further afield - http://www.scottishchambers.org.uk