Where's the guide for a new score

When you enter a note, MuseScore puts it in the octave closest to the last note entered (usually). If there is no note entered yet, it puts the note as close to the B line as possible. If this is the wrong octave, press ctrl+ an up or down arrow to change the octave. If you are using the computer keyboard, this becomes second nature after a while and you get to where you know when MuseScore will enter the note in a different octave than you want.

There are two ways to work around this. 1. You can use the virtual keyboard (press P to toggle it). The disadvantage is that this is much slower than the computer keyboard, but can be useful if nearly every note is being entered in the wrong octave in a section of music. 2. You can use a Midi keyboard to enter the notes. The obvious disadvantage to this is the price. The advantage of both is that you can control the octave for every note, and the Midi keyboard gives you some extra note input methods.