These are both by Jane Wenham-Jones, have lots of good tips and are very funny. Highly recommend.
The Writer’s Tale
This is by Benjamin Cook and Russell T. Davies. Not a writing book per se, more an online conversation between a journalist and Doctor Who’s boss (for the period in which it was written). Naturally loads of writing tips come out of this conversation. An absolute must for Doctor Who fans too.
The Writers’ and Artists’ Yearbook
Full of useful information as to publishers, agents, TV and radio companies and so on.
This is by Stephen King.
The autobiography part of this is fascinating and as you’d expect the writing tips are brilliant. A great read. There's a very good reason why this one book so often features on writers' helpful writing books - it is wonderful. If you can only buy two writing books, get this one and the Writers' and Artists' Yearbook.
How Not to Write a Novel
This is by Sandra Newman and Howard Mittelmark and is very funny. Does what it says “on the tin” but given it’s true you so often learn from mistakes, I’d say this is the perfect book for that from a writer’s viewpoint.
Solutions for Writers
This is by Sol Stein and is another book whose title sums it all up. Easy to read. Very helpful.
The Seven Basic Plots by Christopher Booker •I’d be surprised if this wasn’t a standard text book for creative writing courses. It’s very detailed, kept me hooked and the examples show just how well the plots work. A long read but well worth it.