I had had my first publication, and it's about Swansea Castle! I wrote to the editors of the Swansea Central Community Magazine and asked them if they would like an article on Swansea Castle, since it's in the centre of the area which the magazine covers. They said yes, and the article is in the October edition.
It is encouraging, and it's submission has spurred me on to start the book. I have already written the first draft of the first three chapters. Once they are in better shape I will blog them, so you know you have something concrete to look forward to.