Latest SDK

Hi,

I would like to create a js script, but I am a little confused where to get the SDK.

There is Acrobat and Acrobat DC. Is there more than one SDK?

Should I develop for Acrobat DC.

Is the SDK version specific.

Do I need the pro version of DC to develop scripts.

Will my scripts work on Mac and Windows.

Where do I get the latest, or past versions of the SDKs

I there a quick start, a hello world script with instructions on how to install.

I am sure this is all out there, but I want to make sure I am using the correct versions

Thank you for any help with this.

P.