New and excited to start Buy and Hold

[Laurieann Frazier-Duarte]

Hello everyone,  I just joined the forum and BiggerPockets Pro.  I am interested in learning more about Buy and Hold properties.  The state of Maryland seems to be a high market for this but I continue to be hopeful.  
Does anyone have advice for the following:
Is it a good idea to explore whether to rent out multiple rooms in single-family residences for the purpose of acquiring adequate cash flow:
Does BiggerPockets Pro provide a way to find demographical data on specific sources and motivated sellers?  Trying to get leads at this point to see where I might be able to solicit for properties.  
Thanks much!