Submitting N-400 naturalization form is the final phase of your journey to become a US citizen. This video covers step by step instruction on how to fill out N-400 form, wait time and processing time for US citizenship.

Major benefits of becoming a US Citizen:
In this very uncertain time for new immigrants in the United States, once you become a US citizen, there is no fear of deportation.
You can vote in US elections and file green cards for your family members such as parents, brothers & sisters so they can come join you. FYI, You don't have to wait to be a citizen to sponsor your husband, wife and children, green card /permanent resident status will suffice.