HT1338 how do i upgrade my Mac OS X version 10.5.8

Question

how do i upgrade my Mac OS X version 10.5.8?

Answer 1

If your Macbook has an Intel processor, you can first upgrade to 10.6 (Snow Leopard).
You need to purchase that from the Apple retail Store:
http://store.apple.com/us/product/MC573/mac-os-x-106-snow-leopard
If you are not in the US, use the flag button at the bottom of the page to change to your country's store.
Depending on they type of Intel macbook it is, you may be able to upgrade further to Lion or Mountain Lion.
Open About this Mac from the Apple menu.
Then, click on More Info.
Select the Hardware heading and llok at the Model Identifier.
I can't remember if it was called that or if that OS had a hardware section, but you are looking for something like macbook5,1
If that first number is less than a 5, you can't go any further than Lion. Unless there is something in Lion you need, I would stick with Snow Leopard.
If the first number is a 5 or greater, you can upgrade to Mountain Lion. Once you have installed 10.6 and updated it to 10.6.8, you can purchase and install Mountain Lion from the Mac App Store (which is available in the Apple menu of OS X 10.6.8 or later).
However, if you want to go beyond Snow Leopard, make sure you purchase enough RAM to have at least 4GB. Any less than that would not be pleasant.
Additionally, Mavericks, 10.9, is due to be released this fall. You may want to wait until then and just upgrade to that instead of Mountain Lion (10.8).  Either way, you will need to purchase and install 10.6 from DVD. You need to keep that disk if you ever need to reinstall the OS.