If you're looking to use an older version, remember to use the (help.sketchup.com) to find download links for supported older versions, as third-party sites can pose a security risk. For collaboration, always keep in mind the version compatibility: while you can usually save down to an older version, you'll lose features exclusive to newer ones.
Launched LayOut for 2D presentations. Introduced Photo Match and styles. sketchup version list
Introduced the patented "Push/Pull" tool, which allowed users to extrude 2D surfaces into 3D shapes instantly. It won a community choice award at its first trade show. SketchUp 2.0 (2002) Release Date: June 2002 Key Focus: Usability and integration. If you're looking to use an older version,
A major leap with the introduction of Dynamic Components and integration with the Google 3D Warehouse. sketchup version list