Domain parking with google vs small content site for maintaining domain profolio as I learn to build

Hi guy's,

I got fair size domain profolio and I park them with Google domain parking right now. My goal is to make great content site but, I'm in the beginning learning process right now. So, I'm look for simple parking template with Adsense quick minisite with a little content vs just parking the domains.

I find this on youtube and cost a little but if works I'd get it, and I welcome input and other options please.

Thank you very much