Not sure what company to use for acquiring new tenants

[Bradley Gasparovich]

I am a beginner real estate investor and I currently have 1 duplex. I am currently working on buying my next property. I will move out of my existing unit and into the new one. My question is, for the unit I am moving out of, what’s the best company to use for online applications, tenant screening, background checks, credit pull, etc. ? This part of the process really scares me. Thanks!