Since we seem to get this question on an almost weekly basis so I figured we’d sticky this up for quick reference.
If you have lost your tranform gizmo try pressing the [i][color=Orange][b]X[/b][/i][/color]key. This is the default on/off toggle. Yes, there are [i][b]more than 32 materials availible[/b][/i]. As long as they have a unique name you can have a ton of materials in a scene. You are only limited to seeing 32 in the mat editor at one time.
"Help my viewport textures are Blurry.
thanks to Bobo:
Assuming that you are running OpenGL or DirectX driver, Customize>Preferences>Viewports>Configure Driver
Change the texture resolution to the highest supported, check “Match Bitmap” checkbox for better resizing.
You can also play with the MipMap settings… Linear/Linear should looks pretty nice: