I can't update my Macbook Air because the appstore won't open
I currently have a Macbook Air (2014) with OS X Yosemite (10.10.5). I have been trying to do a software update for awhile now which requires the app store. For some reason my app store app won't open at all. The app will bounce for a couple of seconds but no window will pop up. I've tried a variety of things from restarting, moving things around, deleting some things based off of recommendations from other related threads but I've had no luck. Does anyone know a way to fix this myself or am I going to have to bring it into an Apple store? Any suggestions are welcome, thank you.
MacBook Air