Getting back in the pool after at 15 year hiatus

Hi All, I just joined the masters swimming group at my local Y. I swam competitively growing up before quitting my sophomore yr in college (good DIII program) but I've been out of the pool for the past 15 years. My goals are twofold: 1. Get back into some semblance of fitness so my kids dont think Daddy is a couch potato 2. Enjoy a little competition with like minded people. I'm eager to get back in the water but could use some advice to get re-started: 1. Any equipment changes I need to be aware of or are people using the same kick boards, paddles, fins and pull buoys that I used 15 yrs ago? 2. Can you recommend a good practice suit? / competition suit? 3. How pitiful should I expect to be? I haven't exactly been a paragon of fitness over the past 15 yrs. 4. Any pitfalls I should look out for? I quit originally because of impingement in both shoulders (yeah- I'm a wimp) I used to be a halfway decent sprinter (50/100 fr & 100 fly were my best events; anything longer than a 200 was the devil)- any idea where I can get a look at competitive times in those events? I just want to know what's respectable for a 35 yr old guy.