Kursy - Middia.net
Cro-tatting (http://www.bellaonline.com/articles/art13836.asp) here it's called 'japanese needle tatting - however for me it's staying cro-tatting with double ended hook
Needle Tatting for Beginners through Pictorials. Each gradual step takes you through the basics & how to make rings only, ring & chain, joining, etc. etc. Accompanied by many beautiful motif patterns !
Lesson 10: How to Make a Folded Join in Tatting