QUES: It is published once a month and is free so hurry up and subscribe so you do not miss anything

correct the punctuation.

CORRECTED: It is published once a month, and is free, so hurry up and subscribe, so you do not miss anything.

QUES: No matter where you are in Music you can select a song then press the Touch surface to start playing it

correct the punctuation.

CORRECTED: No matter where you are in Music , you can select a song, then press the Touch surface to start playing it.

QUES: The fastest and easiest way to open your MXS file is to doubleclick it

correct the punctuation.

CORRECTED:
The fastest and easiest way to open your MXS file is to double-click it.