You made it out of law school, hurdled the bar review, and just passed the Bar! Yay, Congratulations!
If you are contemplating on engaging in private practice, it may be essential and convenient (although not compulsory) to be commissioned as a notary public. (Some lawyers working in the government may not be commissioned as a notary public. Note also that in the present rules, only lawyers can be commissioned as Notary Public.)
A.M. No. 02-8-13-SC provides for the Rules on Notarial Practice. But allow me to break the process down for you and cite the requirements you need to comply with before you are commissioned by the proper court as a certified Notary Public.
Note: I will speak based on my own experience.