Well, you could use the Wordpress blog app, it can be made to look almost any way you want. In other words you can have it look like a normal website if you like, or like a CMS. You can get it hosted free at 000webhost.com, in the US.
Or you could use Joomla CMS, it's one of the easiest to get up and running. It can be hosted free in the UK or US at 5quidhost.com.
Probably WP is the best solution. It's got all the plugins you need, this is important on any database-driven site.
There are plenty of hosts at a good price, and even some free ones that handle it. Move your domain to a good domain registrar like namecheap.com when it's near expiry, but not within 60 days as you might have problems moving it then.
A site needs good content so you need to fix that. Then you could have advertising if you like. Best not to put that on the front page though, it tends to make a site look cheap.
There are a couple of easy ways to get content: RSS feeds and article sites. Search 'article sites' and you'll find hundreds, you can republish the articles there (but read the ToS first of course).
For example you can find loads of articles on energy and conservation issues - I looked at your site OK
- and they would work well for you.
So I guess you're not using Freon any more eh?
RSS feeds can be used to populate a page with material of your choice as well.