A notebook or smartphone capable of taking notes is a must. Those little bon-mots you hear on the bus, note them down. Ditto details, facts, names. All are the bread and butter of your story.
Buy a copy of Scrivener – it is simply the best program for writing books in my opinion. It’s a steal at £25. The support is excellent, and there’s a thriving community of writers trading tips too.
Write every day, even if it’s rubbish. Most of writing is re-writing.
Find somewhere comfortable to work. I wrote most of my first book lying on a friend’s sofa. Now I have a bespoke studio in the garden, but if I really want to try and write, I still lie on my sofa. Another place I like to work is the Reading Room of the British Library, just because the atmosphere is so scholarly, it stops me from messing about.
Turn off Twitter, email and all that other distracting stuff until the book is completed.
Don’t even think about publishing unless you publish with Greater Is HE Publishing!