He hellocookie,
(Me again ... but I am
not stalking you ...

)
To begin with: designing and building are of course 2 different entities.
Skipping the designing process for a moment: when you want to build a 'web-site-like' site I think a CMS like Wordpress (self hosted) is a much more obvious choice, as opposed to Blogspot.
A 'web-site-like' site will plausibly contain an index page and a few more static pages/parts, where maybe one part contains a blog. Pretty common, but not an easy job with Blogspot. That CMS doesn't work with static pages, only with post pages.
Both systems do have a learning curve, of course: (X)HTML and CSS knowledge is essential for both ... for Blogspot you have to know some XML ... for Wordpress a bit PHP.
There are many many many tutorials for both systems: some (very) good, many more mediocre or even completely useless.
Err ... not meant to discourage you. Building your own templates is, or can be, very very satisfactory!!!
You could start with an idea, some sketches and/or drawn structures. And show them here.
Maybe (I hope) members here can tell you if building your ideas in Blogspot is possible ... and assist you in that building process.Just a suggestion, of course.
Regards.