When you consider how many options are available to you today, it’s never been a better time to take classes as an adult. After I graduated from college, I've taken classes at a community college, taken free courses online, earned professional certifications, and done a lot of studying on my own. Along the way, I've learned a lot about how and why I learn, and it has caused me re-think some of my core beliefs about of education. Here's what I see as the pros and cons of the different ways you can go back to school as an adult.