I want to be able to create an ebook on my own for Kindle. I want to do this in HTML, and then later use KindleGen and KindlePreviewer for generating a .mobi file and previewing. I've looked around the web for guidance, but while they do have basic instructions, such as creating page breaks, including text, and including basic CSS, they do not seem to go into much detail.
What I need is a guide that might help me create CSS and HTML for an ebook that comes out perfectly in all versions of Kindle, is there any such guide in the form of a book or a web page available out there? Something that helps me include custom bullets and images, stuff like that, and helps me iron out the kinks I get when I try to use the usual HTML/CSS for my ebook. Such as a current problem that I am having of custom bullets appearing shifted way away from the text, and the image of these custom bullets appearing with different sizes in different versions of Kindle.
(I know basic HTML and CSS and willing to learn as much as I need to create that perfect ebook)