How to install CParts?

Step 1. Copy the folder "CParts". (path: CParts_Release/GameData/CParts)
Step 2. Paste the folder to your GameData folder. (path: Kerbal Space Program/GameData)
Step 3. Copy the folder "Ships". (path: CParts_Release/GameData/CParts)
Step 4. Paste the folder to your Ships folder. (path: Kerbal Space Program/Ships) When prompted, select "merge" or what-your-system-says that does the action.

These four steps will install CParts to your KSP, and add the sample ship as a "stock vessel".