The bobbin lace jewelry that you admire would mean learning bobbin lace technique. But most bobbin lace jewelry patterns use very simple basic techniques, you wouldn't have to become a bobbin lace expert to learn how to make it. Basic braided lace (plaited lace in British English) would cover most of what you would need to learn. Please look at the lessons I've posted here on our network.
Erika, it is a variegated thread, size 10, very old thread that came in an auction lot I purchased over 15 years ago. Your comment is very kind! I took a quickie lesson from a seasoned tatter - about 15 minutes or so - back in May 2012 at the NELG retreat. Then each day, I tatted a little bit more. I have a big pile of bit 'n pieces of tatted thread. Next after watching some videos, getting lots of books from the library - voila! I deceided to enter the green piece and a white piece. Tatting is fun. Hope you enjoy and thank you for taking the time to give such kind words.
We do have some videos for tatting and for bobbin lace, but not for knitted lace. I see that you joined the tatting group. Look at its opening page, just under the icons for the group members. The red words are links. Click on ONLINE RESOURCES. There we have found some of the better tatting videos.
Also look at the gray bar across the top of this page. Click on TUTORIALS. Some of our members have posted videos. Near the bottom of TUTORIALS are links sojme by Tatman's and Linda Davies.
The ravelry website listed among the online resources is for knitting and crochet primarily. There must be some folks there doing knitted lace.
Erika Welcome. Please read all the NOTES. They explain our policies, and how the software works. Take time to look around and explore our site. If you have any questions, contact me and I'll try to help. Lorelei "ioli"