There isn't a specific mobo that's good for newbie overclocking, it's either good for overclocking or not.
I recommend you start out with a Z370-A (prime series). I've been using Asus motherboards for years, and you can use their AI Suite 3 to learn the ropes of overclocking, that is how i started. I used Ai Suite 3 to overclock my CPU to learn about CPU overclocking, then i went in and reduced the voltage manually.