Below are the steps to install Ladybug and GH Python which you will need to run them..
1. Go to food4rhino.com and search for Ladybug.
2. For Ladybug/Honeybee you will want to select the Ladybug Tools option and then download the second option(Ladybug 0.0.66 and Honeybee 0.0.63)
3. Go back a page and you should see that GH Python is also in the search results. Click on this and download the first option(0.6.0.3 Grasshopper Components as Functions)4. Now find these downloads in your Downloads folder. For Ladybug you will need to extract the files from the folder.
5. Open Rhino and Grasshopper and drag the Python file (should only be one) onto the Grasshopper canvas to install it. Check “Maths” and you should see the Python logo.
6. Select the Ladybug components both green and yellow and drag these onto the Grasshopper canvas. You should see a Ladybug and a Honeybee tab appear in Grasshopper if the install worked.
7. Close and re-open Rhino and Grasshopper and Ladybug should be working now.
If you have any questions feel free to send me an email and I will help as best as I can!