GolfPro - Congrats on your early Xmas gift. A good call on your part.
I've had an Anova immersion circulator for nearly 3 years now, the touch pad model, and like you, the first thing I did was a ribeye. That's the only way I've done them, or any other steak, or for that matter, roasts, chops, etc., since. The unit rapidly went from being a kitchen toy or gadget to an indispensable kitchen tool that we use multiple times weekly.
As far as recipes are concerned, there are tons of them on the internet, but you have to sift through the various recommended times and temperatures as they are often all over the place. There are a couple websites that are pretty reliable that you should check out. One site, known as amazingfoodmadeeasy.com, is particularly good for those new to sous vide cooking. Another, chefsteps.com is more advanced, but quite comprehensive and easy to follow.
SmokinAl - I did surf & turf with ribeyes and lobster tails for the first time a couple months ago, and it was outstanding. You should try it soon. In the bag with the steaks I added my usual mix of S&P, a couple thyme sprigs, and a couple dashes each of Worcestershire and soy sauce. For the lobster tails, I first blanched them for a minute then into ice water to cool. Dried them and bagged them with some beurre monté, along with fresh tarragon and thyme. I set the circulator at 122F for 2 hours and added the steaks. When they were nearly finished, I added the tails and cooked for 15 minutes. Finished both with a quick hot sear on the grill and they were a perfect combo.