'I wanted to knit my grandchild a sweater, but I had no wool.'
Yes.
In general, yes, wool can be recycled once used. If the wool is part of knit fabric such as in a sweater, it can be recycled for yarn. Wool clothing can be felted and felt used for other projects. Wool fabric (knit or woven) can also be reused.
I've got some bright red wool and I'm going to knit a jumper.
have a look at knittinghelp.com to learn to knit and join ravelry.com for help and patterns
woven, I'm pretty sure.
Yes, wool fibers can be dyed, indeed this is how the colored natural wool that is used to knit warm garments are given their color.
Knit beanies used to originally be made from wool. In the present day, knit beanies tend to be made from synthetic fibers. Some knit beanies in fact are not knitted at all and may be seamed.
Yes, you change wool -- unless you find avariegated wool skein or set of them, that offer you the colours that you want.
Yes, so long as the purse has been knit from wool that will result as expected in the felt you want.
The A Pea closure jersey is made of 100% wool.
Working with 1 ply wool is not easy. It takes forever! The simplest thing is a scarf.