Hi Pressman, welcome -
Everyone so far has said exactly what I could have said to you but I don't think enough emphasis was put on the shorts. Get a good pair of shorts! This will help your body and your riding more than you realize. If you are a big guy, try a pair of bib shorts. I only wear bibs now (and I'm not that big) after having suffered in traditional shorts for many years (my first pair were heavy black wool, with a chamois skin chamois - like for the car). Bibs are a great invention. Also, everyone else will encourage you to ride as much as you can - getting better can only happen if you ride. I will add my 2 cents - get out there and ride! Glad to have you with us!
BTW, are you a pressman? I worked in commercial printing for many years, and the name rings a bell...
PS: While I was typing this wrk101 got the bibs topic nailed. See? Go get some.