The Little Chimp Society- the LCS (Illustrators News Portal)
Hire an Illustrator (for professional illustrators & their portfolios- also associated with LCS)
Illustration Friday! (where I often post a weekly drawing based on a group theme)
MA cultural council (for those in Massachusetts)
GAG (graphic artists guild)
Greeting Card Assoc.
Art Deadlines List (call for art, contests etc..)
ArtBistro (subgroup of Monster.com)
Resources for Crafters/Artisans
The SAC- Society of Arts and Crafts -they have a promising mentor program and help for start ups
Indie Craft Show Guide
Art Fair Calendar
For your website and business
MOO cards (business cards etc) - fantastic lil business cards
W3 Schools (web standards) - will help with tutorials and guidelines for building your own site.
VistaPrint (online printers) - great discounts on bulk orders, customizing products.... so many options.
Modern Postcard (a lil $$$ but worth it for a bang up job) - a standard illustrators go-to for promos.
Shopify (after much research they have great plans and excellent customer service- if I had more product I would and will in the future use them again to host my shop)
Square Mobile payment for artists (if you don't know about this and have a smart phone- it's a blessing)
OK, that's enough giving away excellent insider tips... if you want further help drop me a line!