Posted by These 2 blankets are made with the same colour yarns.
The striped blanket is made using v-stitch. There are many tutorials explaining how to do this stitch.
The sunburst blanket is from the pattern by Priscilla Hewitt. You can see it here http://www.ravelry.com/patterns/library/sunburst-granny-squares
I joined the squares using the continuous join method. The Patchwork Heart has a very good tutorial explaining how to do it here http://www.thepatchworkheart.co.uk/2015/05/joining-squares-method-3-continuous.html