Clickable HTML design

So I am once again fiddling with my blog. I almost get the feeling that I am already to old for the blog generation. It is easy to create something that looks "roughly good" using Blogspot's tools. But if you want to tune some details, it is virtually impossible. Or maybe I am just to stupid. I would like to change the line spacing, but it does not seem possible. Oh well, atleast the page is decently readable anyway. I wonder if I ever will be able to post nicely syntax highlighted code.