6 of 15Image
Once logged in, before you can install Steam, or any other program, you must login as the root, or super, user to your local Ubuntu desktop.
That done, you just need to click Start Steam to complete the installation. This will also download the latest updates to the Steam installer and client.
Next, you need to sign the Steam client license. For most of you this is a no-brainer. Hardcore free software users should keep in mind that the Steam client is proprietary software.