Start with Wordpress.
It's a very simple CMS and has a very fast learning curve.
It is NOT just blogging software, but you can set up a site quickly and easily to be a static site with a static homepage. You can use posts for a blogging or article section... or NOT, depending upon what you want to do.
Then with Wordpress, if you want to add some functionality or fancy features, you can just find a plugin to do it for you.