My recommendation would be Baldur's Gate series - which arguably is the best RPG of all time. At least it got me into gaming! And in my late twenties, too...
Maybe start with the first game, and then proceed to BGII, because the first will seem a little unglamorous after the BGII
While BG is a party based game, the party controls are very, very user friendly, and this game can even be beaten as single player game once you have bit of experience with the combat system.
However, since the party interaction is absolutely delicous and fun, you shall want to bring along companions I predict.
Plus BG forums are really nice - you will get whatever help you need along the way. The story is really well written, you have countless sidequest, you have brilliant characters, you have simple yet satisfying gameplay... It remeains my all time favorite still, after many years.
NB - I am pretty much a RPG fan, but I struggled with DO:A party combat system - I could about manage, but I did not delight in it like with BG.
Give it a try - I hope you will love it as much as I do!
