A college degree requires some number of credits to obtain (plus getting said credits in a reasonable time period, I believe). Each course is a certain number of credits, in my case usually 5. Some courses you'll have to take to fulfill core requirements. For the rest, there will be some guidelines like "take X humanities courses" or "no more than Y electives". An elective is any course you want. As soon as you've gotten enough credits and fulfill whatever other course requirements are needed (such as a capstone project), you've got the degree. This is why it's highly recommended to talk with an advisor at the beginning of the year to help plan out what courses you want to take and when.
Technically you can take any number of courses per quarter (or semester), maybe even skip a quarter. But financial aid requires you to constantly make "satisfactory progress" towards your degree in order to remain eligible, so for the most part you'll be attending every quarter at least half-time. A "quarter" is, obviously, a fourth of a year, so there's four quarters in one year. Where I went to university, there's no classes during Summer Quarter (well, there are, but it's very slim pickings). It's a popular time to do the capstone project since financial aid isn't awarded for summer unless you apply for it. I'm not sure what a semester is.
I'm not sure exactly how many credits is "half-time". Since most courses are 5 credits, I think 10 credits is half-time. That means you can get away with two courses per quarter (probably a good idea if you already have a job at the same time). But then it will take longer to get your degree.
So the most popular choice is to attend full-time, which is at least 15 credits (three classes) per quarter. If you take 15 credits per quarter, then you can finish your degree in or under two years.
The average length of a class is 2 hours. And a class can be two days a week, three days a week, or (rarely) more. So if you took three classes, all two days a week, you're looking at 12 hours of class time per week. But of course, study time and homework time takes longer and adds onto it.
Piece of advice: Make good use of your advisor and teachers. If you don't understand something, ask them. Set up an appointment or see them during office hours. So often I kept myself in the dark about not understanding some problem because I thought "I have the book, I have the notes, I should be able to get this." If you need help, get it before it's too late. Study groups also help.
I guess you can try one of the "Contact Us" options (like e-mail) on the website. I'm not holding my breath that they'll answer anytime soon, but what have you got to lose?
...oh, and if there's a time period between when you register for classes and when classes start, run to the college bookstore or hop onto the college bookstore website or Amazon.com to get your books early. The bookstore on campus is always packed with people the few days before class. At my university bookstore, they'll let you request a book if it's not in stock and then they'll contact you to pick up your reserved book once it comes in. Some classes won't need the textbooks during the first few days (or they'll allow you to glance at someone else's copy), but others will. Also, keep the book receipts and keep them in their plastic if applicable. There are rare cases where the required textbooks (or edition, rather) will change on you the very day class actually starts. Wait until you get the class syllabus before ripping open the plastic.
