what online rent payment do you recommend

[Ben Wenger]

I just went under agreement on a duplex, but it comes with tenants in both sides.  This is the first time ive inherited tenants and wondered what everyones process is with new tenants.  They both have leases that ended and are now month to month.  Also the rent is well under market value so i would like to bring that up to market.  Also there is not any security deposit as the last landlord did not require it.  Any and all advice that you have would be great.