Contributing is simple:
1. # Open an account ("פתח חשבוןכניסה לחשבון")2. # Start working (edit any page by pressing "עריכה")
The website has some (though limited) TeX support. Use codes like <nowiki><math>M_n(F[x])</math></nowiki> to generate <math>M_n(F[x])</math>, etc.