Hmm, that sounds good but when I go to the homepage it gives me buttons for learn more and download, neither of which work and the focus is all messed up. I know it's probably not the CMS part that's broken but if the website for a website builder doesn't work it doesn't inspire confidence.
1. Upload PicoCMS to the least expensive LAMP shared hosting, by FTP.
2. Upload markdown files to /content.
Viola.
You may also want to download themes or make your own with Twig templating system.
IMO if you're a software developer and you can't figure it out in 10 minutes, it isn't really that friendly.