In order to contribute you can email to support@armnotes.com an mscz file using musescore for the music notations , for the chords you can send a pdf or a word file, for the articles you can send us the article with images and sections in a word or pdf file.
All contruibutions are posted between 3-6 days.
It is preferable to email us the topic/song before working so that in case anyone else contributed before you on the same topic you can be notified.