There are many on-line resources out there, let me know of any you use regularly and I will add them.

Metal Smithing

• Craftsy  (free and purchased classes available – use the club login to access the purchased classes)
• Ganoksin (well worth browsing the Learning Centre for tips and tricks)
• Rio Grande (lots of free how to videos)
• Tonya Davidson     (free and paid on-line courses on Metalsmithing)
• Cool Tools (videos on Metalsmithing techniques)

Gem Stones

• Gemstones Cleaning Chart www.firemountaingems.com

Techniques

• Annealing Metal a video from Charles Lewton-Brain
• Shoebox Studio lots of interesting techniques and information can be obtained from this site

Enamelling

• Merry-Lee Rae’s Classroom (free and paid on-line courses on enamelling)
• Enamel Workshop   (more videos on enamelling)
• Cool Tools (videos on enamelling techniques including Metal Clay)

Other 

• Printable Graph paper templates
• Template maker    (templates for various shapes for making 3D shapes – e.g. cone for a ring setting)
• Creating Equal Divisions (Ganoksin) with no maths involved
• Using Coins in Jewellery Making