Can anyone please recommend a good site to start a blog please?
Wordpress.com is the most popular. The basic system is free.
http://blogbasics.com/free-blog-sites/ (http://blogbasics.com/free-blog-sites/)
The above link gives a brief overview of the most popular blogging sites. Ignore the advert.
Have a look around a few - squarespace, simplesite, blogger, wordpress for example and see which one you like the look of/works for you.
I'm on Wordpress.