How to enable tabs on the left panel? I am new to Blender and was watching some video tutorials. However, the one in the video (v2.78) has the tabs on the left panel,



and mine (v2.69) doesn't.



How do I enable them and what is their correct name? Or were they added in some later version?
Upgrade your Blender. This feature was introduced in 2.70. By now 2.79 is the current version. You can just download a tarball, extract it, and run it.