Hi George Michie,
Thank you for your interest in our kinetis product.
The KSDK-1.0.0 you have downloaded is the newest SDK version.
You can use the IAR, kds or MDK to access it, this is already mentioned in our kinetis SDK release Notes.pdf.

About your question, I think you should read some SDK document carefully before you enter in the SDK demo code.
After you install the SDK , you can find the useful documents under the default path: C:\Freescale\KSDK_1.0.0\doc

Wish it helps you!
If you still have quesiton after you read the document, please let me know!
Have a great day,
Jingjing
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