Johnnie M, good luck on returning to study. Its never too old. I was 31 when i finished my first degree and now have a fabulous job - not too well paid but very rewarding. The main advice i can give is to be absolutely certain about what it is you want to do and then do your homework to make sure that there are actually jobs out there when you complete the course.
You may also want to consider whether you actually need a degree to do the job you want to do. Will a shorter qualification open the correct doors for you?