Bhai Vir Singh Ji have written an introductory-level steek meant for the average Punjabi speaker to read.
Chh. #29-43: Chaacharee Chhand
Chaacharee Chha[n]dh; TwaPrasaadh[i]Name of Chhand | Your Kirpa
Chh. #2-28: Bhujang Prayaath Chhand
Bhai Veer Singh does not explain the definitions of Namastwang, Namastang, Nasmastang, Namastat, and Namo.
Jaap Sahib: Context & First Chhand
One time, Satguru Gobind Singh Ji Maharaj was sitting upon a boulder at the banks of the Yamuna River, Paonta Sahib. Here Maharaj was meditating on Akaal Purakh. In the midst of this, a wave of Divine Love arose