Hi Simon,
Lynn's already offered some great suggestions and I'm glad your newsletter signups have improved for you.
I'm not an expert copywriter by any means, but after taking a look at your site I do have a few suggestions for you.
1) I think your headline "Plan Your Dream Wedding - Without Breaking The Bank!" is okay, but I think you should test some other options and see how they work too. Maybe using some actual dollar figures would help, something like "Planning your own wedding? Save up to $4500 with my tips and advice!"
2) Now that you've got a list going, take some of the ideas from your book and share them piece by piece with your newsletter readers.
3) The biggest problem I see with your website though is one of credibility, as your site doesn't really say much about who you are and why I should believe you and give my money to you.
As a visitor to your site, questions pop into my mind like...
"What makes you qualified to write a book like this?"
"What kind of experience do you have in the wedding planning industry?"
"Have you written other books or articles that I can see to judge the quality of your information?"
"How have you helped other people save money planning their wedding?"
Put yourself in your visitors shoes and try to think up as many possible questions that people visiting your site might have that would keep them from purchasing your products. The more questions you can answer in your sales copy the better.
(Side note: Check out the sales letter for
www.themarketingbible.com - I don't know how well it converts but it's one of the best I've seen and there's alot to be learned from it.)
Also, posting some testimonials can really help your credibility and help convince people to buy from you. Dan Kennedy says it best in his book "The Ultimate Marketing Plan" when he says "What others say about you, your company, your products, and your services is infinitely more credible thatn anything you can say on your own behalf. When you make a statement, it's a claim. When your satisfied customer makes the same statement about you, that's a FACT!"
And last but not least Simon, a nicely designed book cover couldn't hurt you. It's at least worth a try to see what it does for your conversion rate.
Hope this helps some and doesn't come across as too critical - you've got the start of a good website there and I'm sure you can increase your sales with some minor tweaks here and there.
Cheers,
Steve