I bought this book as soon as I saw you mention it on here. It is truly amazing. I am self taught and have been marbling for over ten years relying on books to give me tips. This is now my favourite reference and I love the notable marbler section. Educational and anecdotal.
Trying such a completely new craft may seem daunting, but the results are simply tremendous. The completed papers included in here are gorgeous, and maybe one day yours will be too.