Of course Christine. This is a writing site. You publish articles (called hubs) on any topic, providing it fits in with the TOS of the site itself.
You can earn an extra income if you so wish. There's lots to learn for a new hubber and the best pleace to start is: http://hubpages.com/@learningcenter
And you could read through some of the hubs written by your fellow hubbers by clicking this link and checking out which hubs will help you them most: http://hubpages.com/community/advice-and-tips-for-...
Good luck and have fun :)