I enjoy yoga, KTeacher! The local gym that I belong to offers a very basic yoga class a few times a week, and I love to attend when I am able. It is very easy to follow and not overwhelming at all. I would definetly check it out! You can very easily participate at a level that is comfortable to you.
Also worth mentioning is Bikram yoga - which is a bit more advanced. Bikram yoga takes place in a room heated to about 110 degrees! It is very intense, but worth looking into - it's quite an experience! Be sure to do research and find a studio that welcomes those who are new to Bikram, though. The first time I participated, I left the room a few times to cool down - and I felt fully supported and not uncomfortable at all!