It's easy - just select the desired access level, copy this link and send it via email, instant message, etc.Link: Just a link to your wiki. Post this anywhere and people can ask you for the invite key.
On Windows, use Activestate Python. It sets Windows environment correctly, and installs IDLE (simple Python IDE)
On ubuntu, desktop "Add/Remove" cannot add IDLE. You need to enable 'universe' repository - easier to do using Synaptic (System > Administration > Synaptic Package Manager)
On all systems (Windows/Linux) avoid directory names containing spaces.
Running
On Linux, you may want to make your files executable: in file manager, right-click and set Properties/Permissions.