You are on your way.... good deal.
I also came back into RC to find that radios had embraced micro processors and memory. The effort spent figuring it all out added to the fun (most of the time). It will certainly add pastime and no doubt getting back into the air will be enjoyable and... if there are still some of the old friends involved... you will find renewing those friendships very gratifying, plus the making of new ones. RC'ers are a great bunch... have fun.