I was not sure where to start and I was told by my supervisors that the best way to write one is to read a few Literature Reviews and not books on how-to… It is good advice and I am reading a few examples from theses online. Howver, there is so much information online that I had to see something about the structure. I wanted to make sure I am not falling into traps that other authors may have fallen into. The best (and shortest) guide I came across is by UCSC and is available on their website:
How to Write a Literature Review
Update 11 October 2012: Here is another good one.
In preparation for the work that I will hopefully start soon, I have been searching for forums and blogs about PhDs and found a great place which has already been of help. I joined their forum as a prospective student and asked a question in the forum about where to find archives of successful theses. I received a reply within minutes, garnished with words of encouragement.
Check out the link below for everything you can imagine you would need to know about doing a PhD and click the link on the top right hand corner for the Postgrad Forum.