Getting a .com.np domain is easy and straight forward process. You just have to submit an online form in mercantiles register.com.np website. If you need domain for a person then citizenship certificate is needed. If you need domain for a company then companys registration certificate is needed. You will have to upload scanned file of required documents.
If you want to see tutorials about how to do it then we have listed below some of the useful tutorials about this which can be found online.
Below are some of the text tutorials.
Below are some of the video tutorials.