Blender 3D: Noob to Pro/Operating System specific notes
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Here we will put in specifics that pertain to single operating systems.
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[edit] Linux
If the ALT+LMB key combination moves the current window then there's a conflict with your window manager. You can resolve the conflict or use CTRL+ALT+LMB or MMB instead. If you are running KDE this can be resolved by: right-click on the title bar of the main Blender window → select Configure Window Behavior → go to Actions → Window Actions → in the Inner Window, Titlebar and Frame section → select the Modifier key to be ALT and set all the select boxes beneath it to Nothing.
In Gnome, Click System → Preferences → Window Preferences. Look for the last three options Control, Alt and Super. Select Super. Now you can hold super to drag windows around, and use CTRL and ALT as normal.
[edit] Gnome
You're probably not going to want to use the Find Pointer functionality in Gnome, it will impair your ability to use certain functions such as Snap to grid or using the lasso tool. If your mouse pointer is being highlighted when you press and release the CTRL key, go to: Mouse in Gnome's Desktop Settings and uncheck the box Find Pointer.
[edit] Ubuntu
There is a known incompatibility between Blender and the Compiz Fusion accelerated (OpenGL) window manager used in Ubuntu. By default, Compiz Fusion is enabled in Ubuntu, causing the problems to manifest themselves in Blender as flickering windows, completely disappearing windows, inconsistent window refreshes, and/or an inability to start Blender in windowed mode.
The fix for this is simple. Install compiz-switch (might be in universe). Go to Applications->Accesories->Compiz-Switch. This will disable compiz temporarily. Do the same to turn compiz back on when you're done using Blender.
[edit] Mac OS X
On Macs with the new thin Apple Keyboard, you may need to press "fn" in order to use the F1-F4 and F7-F12 keys. To expand a section in Blender, you should usually press Ctrl+Up, on mac if "Spaces" is enabled you may have to press Ctrl+Alt+Up.
[edit] Windows
Pressing Shift five times in a row turns on the StickyKeys, but this is often not the user's intention. Doing so will change the way the computer recognizes commands. If the box for sticky keys appears, press cancel. If you don't need the accessibility features, you can disable sticky keys: go to Start → Settings → Control Panel, select Accessibility Options, and for each of the options StickyKeys, FilterKeys, and ToggleKeys, (1) clear the "Use …" checkbox, and (2) press the "Settings…" button and clear the "Use Shortcut" checkbox.
The simultaneous pressing of SHIFT and ALT to acheive SHIFT+ALT will sometimes switch the keyboard layout, for example QWERTY becomes AZERTY and vice versa. For this reason, the tutorial does not teach the alternative SHIFT+ALT methods. If you find your keyboard layout altered you can press SHIFT+ALT again to toggle it back. You can disable this key sequence: Windows Control Panel → Regional and Language Options → Languages (tab) → Details (button) → Key Settings (button) → Change Key Sequence (button) and uncheck the Switch Keyboard Layout checkbox.
