Shannon Reid, It's a bit more involved depending on your background, but over the summer, you might also take advantage of free MOOC's like edX's "The Chemistry of Life" [https://courses.edx.org/courses/course-v1:KyotoUx+001x+2T2015/] which might give you some additional ideas as well as to give you more insight as to how all the material of Big History ties together.

If that course is too involved given your background, you might also find some interesting/useful similar material from The Great Courses via The Learning Company. (For after all, wasn't it Bill Gates listening to Dr. Christian's Big History series via the Great Courses that set what we're all doing in motion?) Keep in mind that you can often find DVDs, CDs, and materials in their series for free at your local library, or you can take advantage of free trial offers on platforms like audible [This one should give you two free audiobooks: http://www.amazon.com/gp/product/B00NB86OYE/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B00NB86OYE&linkCode=as2&tag=bighistory-20&linkId=LWQXKALDLO24JNYN]. I find it easy and entertaining to listen to material like this while jogging or on my morning commute.