Homeschooling isn't just for kids. There are plenty of ways for moms and dads to learn from home as well. Show your kids that learning is a life long activity.
Here is a selection of sites that offers courses online.
Course - Free
http://oedb.org/open/ Offering 10,000 free online classes. They offer audio lectures, video lectures and full courses from the top schools in the US including MIT, Stafford, and Duke University.
GCFLearnFree.org This sites courses cover more basic, everyday life subjects such as computer and math basics along with computer software courses.
http://www.openculture.com This website offers 700 free courses from top universities in a variety of subjects. They also offer a nice selection of courses that provide a certificate of completion when finished.
Courses - Paid/Fee
Ed2Go.com This site works in conjunction with local colleges or on it's own. There is a fee for courses and set course dates. Variety of courses from Accounting, Law, Health Care and Teaching in addition to College Readiness and Personal Enrichment courses.
Whether you want to brush up on skills already learned long ago or learn something new. Never stop learning!