PrestoKeys provides strong support in the area of assistance. The settings are split up into 3 categories: feedback, guidance and help.
The feedback settings respond after you've played a note. These settings should be turned on until your accuracy is almost perfect - especially note feedback.
Piano Feedback flashes the correct piano key in red if you play the wrong one. For example, the image below shows the 'D' key being pressed but the correct not is 'C', so that key is shown as red:
Note Feedback displays the correct letter of the note on the staff if you don't play it correctly:
Staff Feedback shows the location and letter of the note you played on the staff line. For example, the 'C' key is being played in the image below and the note is shown on the staff in green:
The guidance settings help you before you play the note. At least some of these settings should be turned on until you are comfortable reading notes and playing them on the keyboard. It's best if you stop using these settings as soon as you can.
Piano Letters display the letters on the virtual keyboard. This setting is useful if you aren't familiar with the location of piano letters. Only one octave of these letters is displayed if the piano has a larger range, because the letters are simply repeated over and over. You should use this setting until you know which piano letter belongs to each key.
Staff Letters displays a template of the staff letters as shown in the image below. You should use this setting until you learn the notes for each line and space on the staff line.
Note Helpers display the note name of each note as it approaches the line in scroll mode or after a short time in still mode. This settings gives you a chance to think about what the note is before you are shown, so it is a very effective tool to utilise until you can comfortably read the notes without help.
Piano Guidance shows you exactly which keys to press and when to press them. This setting shouldn't be used if you are trying to learn to read music, but can be helpful if you are trying to memorise fingering for a song.