E-book Creation

I’m currently writing a book about search engine optimization for blog posts, and I’m thinking of publishing it as a Portable Document Format (PDF) eBook.

But what legal rights and so one must I be aware of? And can I publish the eBook as a download (secure payments trough PayPal) myself without further ado?

I’m a Norwegian resident so US taxes and so on is irrelevant.

I’m also interested in other tips for eBook publishing.

PS: I’m already aware of PDF encryption and metadata.

Hi everyone,
Does anyone know of a program I can download, perhaps for free, that will convert pdb ebook files to pdf ebook files?
Thank you.