Welcome to TM! Good to see that you're off to a good start with your card magic!
With regards to mentalism, it's imporant to remember that a PK ring does not make mentalism - you're best off starting with Corinda's Thirteen Steps to Mentalism. Craig Browning is the best person to ask about mentalism here on TM, and he wrote a useful piece on the subject - see
here.
But yes - as you say, take things at your own pace, as and when they feel right. Best of luck and again welcome to TM!