Doing some research on how to build an app that uses Skydrive, think leaderboard for games, and the search for useful items turned up a bunch of flotsam (which is different than jetsam by the way). So here are some of the links I think might be useful, I have looked at most of them and
Live SDK v5.0
https://www.microsoft.com/download/en/details.aspx?displaylang=en&id=28195
Download and install the Live SDK
Live Connect Reference
SkyDrive Photo API sample for WP7
https://code.msdn.microsoft.com/silverlight/SkyDrive-Photo-API-sample-f06778ae
Note on this page there is a mistake:
To get to the application management site to create an application id that can be used for your application. Definitely follow the recommendation to NOT use your “day-to-day” LiveID, or even the ones you use for those “secret” sites you visit (think: Game sites, etc.). Make sure if you do create another liveID that you remember the Password!
Obtaining User Consent
Photos Overview
REST API
https://msdn.microsoft.com/en-us/library/hh243648.aspx
Need this to understand REST, do right after you take your nap
Skydrive JavaScript API
https://msdn.microsoft.com/en-us/library/hh243643.aspx
This one is for the JavaScripters!
Windows Live Client Extensibility APIs
Libraries and Controls
Photos Overview
Scopes and permissions
BrandingType enumeration
https://msdn.microsoft.com/en-us/library/microsoft.live.brandingtype.aspx
Identity Class
https://msdn.microsoft.com/en-us/library/microsoft.live.messenger.identity.aspx
MyActivities Entry
https://msdn.microsoft.com/en-us/library/ff750568.aspx
The complete developer's guide to the SkyDrive API (If you are using JavaScript and Windows 8)