I'd be interested in finding out how others have found hitting the books more then 10 years after high school was for them.
It's been more than 15 years or so for me(counting my dropout year from previous comm college). I started seriously looking about a year and a half ago. I already knew what I wanted to go back for(telecommunications - 14 year career so far). At first, I was hesitant about applying 'cuz I thought my app might get rejected for some reason -- too old, never took SAT, ACT, etc... None of the colleges in my town offered a program that I was looking for so I knew that online classes were going to be the route I had to take. I had narrowed down my choices to a few colleges, but I ended up applying at the one with the best undergrad telecommunications program in the States. It became a no-brainer after this university renamed their school of computer science after my company's CEO. Employees of my company also get a $500 discount per credit from their normal tuition rates. That goes a long way too since my company caps the amount that they'll pay each year(8k).
Getting in was easy and painless. The most difficult part of getting in was having my previous schools send my transcripts to the new school. And even then, it wasn't that difficult. Now that I'm in, I've found that my classes are fairly easy. I didn't particulary like high school and my previous college(but I still did good) and I thought I might struggle a bit more in this new college. I definitely have more drive to do well. I have matured more too. I'm making it my personal goal to finish out my degree with *_* cum laude honors if I can. It's not for bragging rights or anything like that, I just want to prove to myself that I can do it and not have any jw influence over me whatsoever while doing it.
I know you can do it. If you are serious about going back, you already have the drive to tackle it. If someone was undecided about going to college, then I would say don't do it. The first step is wanting to go. From there, it's all downhill.