Finding and Preparing natural Materials: Matt Tommey This has helpful information on how to prepare and store basket materials.
Quick and Easy Blackberry Bramble Basket: Paco Warabi From harvest to creation. Well videoed and how-to for all levels of basket makers.
Making a Birch Bark Basket: Nomadic Woodsman: Although he uses modern tools, you get enough instruction to adapt to fully primitive and the basket he makes is stunning!
Primitive Technology: Basket: Primitive Skills: A step by step demonstration from harvest to use of a woven basket made from vines.
Making Willow Baskets: Woodlands TV: This is more a demonstration video than a how-to video. If you have some experience though, you can see a number of tricks in techniques as she makes her basket. She also speaks of the preparation of the saplings for basket making.
The Black Ash Basket Maker: Wood Culture Tour: Although this is more a documentary than a how-to video, the video shows him working on the harvesting and preparation of the splints and the weaving of the baskets. It also shows a wide variety of splint baskets that he's made- beautiful and great for getting ideas of variety of ways these can be designed.
Hexigonal Weave with Basket Hoop Vine; Caribbean Earth Skills Tracker instructor Carmen Corridino demonstrates the making of a hexigonal weave basket from harvest through material prep to construction. Beautiful baskets!
Weaving Cattail Baskets; Peasantartscrafts Various techniques for using cattail for baskets is demonstrated by a Romanian elder.
Make a Coiled Raffia Basket: We Are Scout: This article has great photos and descriptions on how to make a coil basket. This article uses raffia, but the principle can be applied to other media including pine needles, cloth or other plant fibers.
My Pinterest collection of Basket images