In other words, mini tutorial.
Based on the wool, I selected the needles. I used the size suggested on the wool. As I am not aiming for a specific size I didn't knit a swatch.
I cast on lots of stictches until one needle was quite full. This turned out to be 126 if I have counted it correctly. The first 18 rows were all knit. The next ones are knit 5, purl across, knit the last five. Turn it around, the next row: knit all across. I'm carrying on this way until I reach about a square in size, then I will knit each row for a bit, then knit in another patter, keeping a few stiches at the end of each row always knitted so that it doesn't curl.
When I have used almost all of the ball I will cast off, and see how big it is. Or if it I decide it is long enough. Then on to the next ball of wool, casting on 126ish, making another long length. Once this is the same length I will sew the 2 together. If I want it to be wider I will knit a 3rd from the last ball of wool.
This is going to be a long project, so I have other smaller ones on the go at the same time.
I aim to knit at least 4 rows a day, it will keep the progress consistant I'm hoping.