There are a lot of questions you can ask before you sign up, tho...there are several different agencies that issue cert cards, you might want to talk to some instructors first, see if there's one that you feel comfortable with. You might want to solicit instructor recommendations from people on the board for your particular location...
During the OW course, you'll get a chance to learn about the equip you were given and see if it's still serviceable...some items, like the suit, bc, and mask, may not even fit properly and won't be of much use to you.
Just so you know, scuba diving isn't a cheap activity, even if the free gear you have is all in good operating condition. Be prepared to spend some money for your lessons, additional gear, rentals, equipment checks...
Oh, another thing...your profile reference to 'avoiding responsibility' will probably need revising once you actually get into diving...
Hope you enjoy the ride. Diving rules.