You can do it yourself. All of the forms are available at http://www.courts.state.md.us/family/forms/domrellist.html along with guides on how to use them. Start by filling out a complaint and a case information report. Then you'll file in the circuit court in the county where you live. you'll then serve the other party with the complaint, and they can answer etc.
This is not legal advice nor does it create an attorney-client relationship. This is for education and informational purposes only. It is always recommended that you contact an attorney with any concerns as each individual case is unique.
I don't practice in Maryland, but usually taking a trip to the courthouse and just asking the information desk or the clerk basic questions will get you started. Check if there is a guidebook available to you which will also help you through the process and understand it. Good luck!
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