Here is a crochet tutorial for the corner to corner blanket. I use BRITISH terminology, with reference to US terminology. It may be an advantage to know how to treble crochet (US- Double crochet) I have
:: Illusion Blanket, general instructions by Trish Smith (no specific written pattern). A very clever idea using corner-to-corner diagonal box stitch, with 4 panels joined as they are made. Colour graph available on Ravelry page.