Find where that button went!
Check out the new tools!
New keyframes and more!
New render engines and more!
Check out what was the same between 2.79 and 2.80 but has changed in 2.81
In this Blender tutorial we see the different Blender key shortcuts when selecting vertices, edges and faces on a 3d mesh from Blender3d v2.7 and v2.8