New to RE investing .All advice is highly appreciated

[María Del Pilar Polo]

Hello to everyone, 

After working in Dental Hygiene for 22 years my body is telling me to stop (pain in left shoulder and possible future surgeries). I  truly love what I do and helping my patients unfortunately I know I will not be doing this much longer. I need to find a different source of income to be able to support my family . That is why I am here today.

I have always been interested in Real Estate and I believe this path will bring me to a financial stability. 
I have listened and read several books already regarding RE investments and I'm sure I would like to start my journey with SFH long term rentals but have no idea where. I'm currently in NE Georgia (Suwanee) house here are extremely expensive and I don't believe a good renters market.
Some friends have advised Macon or Columbus but honestly I have no idea how to determine if an area is good or bad for long term rentals. 

I will appreciate so much any info, help or connections (even friends ) I can make to start my journey in a positive way. I have taken a huge risk by taking a HELOC to be able to start this path and I'm am a bit scare to lose it all. I have two kids that depend on me and cannot afford to make really really bad mistakes . I am willing to learn from any of you any tips and any knowledge that might help me.
I’m grateful for any insight and advice anybody can provide. 
Thanks for taking the time to read my post