I found the page to edit book details but there is no edit link to change a title. How do I do this? Do we have to send in an email to do some? To whom would we send it?
Chances are your title is locked. You need to contact Support and ask if they could please change it. This is possible if it is not already in distribution channels.
If it is, then you need to Retire your project and start a new one -- with a new ISBN.
I just changed a title of one of my books but since the original title had an isbn I had to do a completely new project, new isbn for it.
You have to change the title in your file of pages, also, and replace the older file with it via Revise, Create New Revision. There's no shortcut to doing it because the title appears in many places
the bad thing is that we ned to pay every time we do changings, right?
Wrong. Lulu is a business and it costs money to print a book, why should you have a free one? It's just Cost anyway.
Yes that's true but you can look at it this way: If you improve it therefore have to pay a bit for it that means you have books on hand to sell on your own.