The software version available after the leopard version is something called 'Snow Leopard'.
OSx Leopard
A MacBook will run Mac OS X 10.6 (Snow Leopard). If the MacBook is currently running 10.5 (Leopard) a copy of Snow Leopard will need to be purchased.
The operating system for the MacBook Pro is Mac OS X. The current version of Mac OS X is 10.6 which is also known as Snow Leopard. The next version will be 10.7 which is known as Lion.
Go to the apple icon in the upper left hand corner of your desktop... Select "About this Mac" if the software version is 10.6 or later, you have snow leopard.
Snow Leopard is the codename of one of the versions Mac OS X, the default operating system of MacBook's and all Apple computers.
Mac OS X is the operating system used on Apple's Macintosh computers (See links below). The latest version is numbered 10.5.7. Apple has a tradition of naming the different versions of Mac OS X after large cats such as Tiger and Puma etc. The current version is called Leopard. Apple's laptops are called MacBooks. There is a basic MacBook, the more advanced MacBook Pro, and the ultra slim MacBook Air.
The Apple Macbook 13" laptop comes with the Leopard operating system, and the software that is preloaded is; iPhoto, iMovie, Garageband, iTunes and Safari web browsing.
No, 10.6.8 is the last update for 10.6 period.It depends on what version your MacBook is if it can install 10.7 or above.Apple has ended Snow Leopard and will only update a few Security and Java updates for a limited number of times only they know.
The App Store is part of the OSX System software. If you don't have it you can update to a version that has it, which includes Mac OS X 10.6.6 "Snow Leopard" or later.
Probably not.
While Snow Leopard can support 8GB the MacBook has two SO-DIMM slots which can hold up to 4GB of RAM.
Buy the Leopard one. It will save trouble.