You can get more apps by selecting the appstore that you want like Getjar. Note not all apps are compatible. You can also search and download more apps using the search bar.
If you have an android device and want to sync your apps with your pc, you need to register on your pc and get the Bluestacks Cloud Connect App at the appstore link here: Bluestacks Cloud Connect via Play store
Here’s a video to show you the simple steps of syncing:
If you have issues with the syncing you can always restart the gadget by right clicking on the icon in your system tray,
And there are forums available if you run into any trouble, but as I said before it is still in beta so expect some bugs.
The apps work very well too. But with some apps you may need a good graphics card.