Consult the school website or an on-site employee regarding transferring credit hours. Many schools allow you to use a certain amount of hours taken during your first Master's program as credit toward your second.
Speak with your employer or family members regarding your decision to pursue a second degree. Graduate school is time-consuming and will require schedule flexibility and support from those in your life.
Save enough money to keep your bills paid during the duration of your schooling. This will dramatically help to reduce the stress you experience while pursuing your second degree.
Work with the university of your choice to attend all required classes, earn all eligible credits and complete any other necessary steps toward earning your degree. When you have completed every requirement the school has set out, your second Master's will be official.