Hands Placement
The standard finger position is the usual ASDF JKL; keys.
Regarding the thumbs, the left thumb should rest over the Backspace key and the right
thumb should rest over the Space key. Both thumbs share the central
Enter key.
Dual-Function Keys
Dual-functions keys are keys that combine a TAP key and a MOD.
Simply speaking: when a dual-function key is tapped, one get the tap effect of the key. When it's holded or combined with another key, it will act as a modifier.
Layers
Layers are extra «layouts» containing different keys that can be accessed temporarly when pressing the corresponding layer key.
That's like another Shift that provides access to different characters.
Touch Typing
To quickly familiarize yourself with the layout, print this PDF fold it into a triangular prism, and position it in front of you, between the keyboard and the screen (you can also print your favorite layout in the guide).
Practice touch typing without looking at your hands or the keyboard.
For rapid improvement in efficiency, we highly recommend using the following websites: