Loran,
I agree with what Roger had to say:
Loran, "Go for it, Bro!" Every thing to gain--nothing to lose. What you 'have' will simply be added to... Thereby your 'past'--'bad-or-good'--can possitively effect your future making You a more effective person with understanding gained in the pursuit/attainment of 'higher-education' to be shared...
You stand only to benefit from continuing your education. Whether you choose to take a class simply for the pleasure of it or seek to increase your knowledge of a particular subject, you should go for it.
In summer, I often take online classes. They aren't difficult to keep up with, lectures are presented in units, assignments are sent via an online mailbox system, class discussions are conducted on message boards just like this one and you have email contact with your instructor. Online classes are a bit more pricey than those in taken in the classroom, but they afford you the convenience of working at home and somewhat at your own pace.
I find that field related classes online are a breeze for me to do, likewise anything having to do with preparing papers. For other classes where I need hands on support, such as math classes, I would choose to do those in a classroom where I can get immediate support from an instructor. It's good to know where your strengths and weak areas are.
Since my post where I mentioned wanting to take a religions class, I have been given a special 2 week assignment at work which in all good conscience I cannot refurse. I'm still going to register for the Western Religions online class. I'll report in here to say whether or not my incidental learning on boards like this over the years, has given me a good base from which to work in the class material.
You are not too old to learn, as one poster implied. You will take into your course work, life experiences and a determination to learn. My observation has been that older students are among the most active students in class and are there to get their money's worth out of a course.
Good luck!
Jersey Girl