Many online stores not working due to the new update.

Question

Hi, Mavericks has been awesome so far, except a number of problems, iBooks store will not run, i click on the store button then the app goes unresponsive and only leads to a force quit and then same problem if i open the app again. Next problem is very similar except with the app store, the store page is completely blank apart from the logo of the appstore in the backdrop of the window. The third problem is that Garagband spent so long to install, once i had installed it, it opened and then became unresponsive and then i looked for some fixes online, couldnt find any. So i thought maybe to delete the old garageband so the new one would work. However the new one didnt open at all after that. So i thought to delete the new garageband and install it again from scratch with annoyance. Except however the app store doesnt work. How can i fix these problems, even if these problems are bugs that Apple will hopefully work out, i do not know how i can receive an update when the app store (which is now used for getting updates) doesnt even work in the first place.
Any help is welcome, because this problem has been driving me mad all day, i doubt that simple amount of time will change anything but i keep hoping.

Answer 1

Checked to see how much space is available ??
Click your Apple menu  top left in your screen. From the drop down menu click About This Mac > More Info > Storage
Make sure there's at least 15% free disk space.
If it's not a matter of storage space, the startup disk may need repairing.
Launch Disk Utility located in HD > Applications > Utillities
Select the startup disk on the left then select the First Aid tab.
Click:  Verify Disk  (not Verify Disk Permissions)
If DU reports errors, restart your Mac while holding down the Command + R keys. From there you should be able to acces the built in utilities in  OS X Recovery