Finishing a section is a simple matter of sliding the knots off of the needle, toward the thread end. Since the needle is threaded and a length was left before you began making the knots, a loop will form as you slide the stitches off. If you are to make a circle then you slide your needle all the way through the loop and pull tightly, you will need to pull back toward your work at the very end to get the circle to close. I recommend knotting every time you finish a section to prevent any unraveling.
If you are not circling then just pull through completely. There are plenty of YouTube Videos and articles on this subject. I even created a powerpoint tutorial complete with illustrations to use during a tatting class I taught. It turns out teaching 15 people to tat at the same time is a pretty daunting prospect. On the other hand, using a Knook Hook (knit by crochet) is a great way to make the stitches very visible making teaching easier.
I have two basic patterns down, the first I learned is a flower, pictured below.
The second is a wreath, which I have since used to make a doily. I do not have pictures of the wreath or doily at this time.
Happy Stitching!


