rent collection suggestions

[Tom Server]

Hello.. looking for some advice here.. new to investment property.

I'm currently in the process of purchasing my first multifamily investment property. I'm due to close at the end of January 

The home currently has tenants. 

The first rental is section 8 , the second and third tenants pay cash. 

How do I go about changing over to an online payment for the cash payment tenants?

How do I change the section 8 payment to myself?

What payment system do you use?  Is Venmo, or PayPal a way to do a monthly rent payment? 

thank you