Organisations
Tetbury Camera Club's aim is to provide a convivial meeting place where camera and photographic enthusiasts can meet to exchange views and ideas, view photographs taken by others, and to generally improve and extend their knowledge of this fascinating hobby. Meets most Tuesday evenings.

Colour Management
If you use Photoshop Elements, Paint Shop Pro, or other color managed software that does not support converting images to a printer profile Dry Creek Photo have the perfect utility as a free download. Their Profile Converter converts tiff format files to any valid ICC profile - ideal if you use a photo lab.
Norman Koren's amazing website has loads of good information about colour management as well as lots of useful links to background reading on the subject.

Technical
DOFMaster is a useful site dealing with depth of field and hyperfocal distance. Print tables and graphs for your lenses.

Resources
Proam Imaging do all my colour printing work and I have always been very pleased by the results. With on-line uploading turn round time is just a few days.