Yarniashop youtube video channel 

Finger knitting video (Little video of how to use pot holder loops to knit a chain. You can knit on your fingers with yarn but the loops are easier to manage. Best loops are from  Harrisville Design)

Fun link to a video of how Noro Yarn is made.

Interesting discussion on seams by Sandy Rosner in Twist Collective online magazine.  (Fun to read the whole thing)

Ravelry:  Great reference site.  You get a free user id.  Once logged in you can enter your own projects or look at others projects.  Great way to see what I yarn can do.  Has very  large pattern library.  Both free and paid patterns are indexed and it helps you to find out where to get the pattern.

Knitting Help.com videos:  good reference video library.

Sweater 101: Recently, I found a book that you would find a great resource when doing sweaters. It has been out of print but now it is back. As a shop owner, I often have customers who have found the perfect yarn and the perfect pattern except the pattern is not written for the yarn. This just might be the book to help you solve that problem. Your chances of making a sweater that fits someone you love (including yourself), with or without a commercial pattern, just got better.Sweater 101: How to Plan
Sweaters that Fit…and Organize Your Knitting Life at the Same Time by Cheryl Brunette