[unknown] rebuilding my website by using joomla for the first time and starting to feel comfortable with the functionality of the joomla system
Since you are starting right now to use joomla then you should start with something easy to manage , my suggestion is to start with a quickstart version of any template and then manually copy ( editing demo content ) your website into new template, following template documentation , based on my experience this is the best way to start to learn and at the same way publish a new website based on one of our templates -
you can choose one of them from HERE
or HERE or HERE
Hope it helps