How do I take possession after tax sale in Texas?

[Orlando Ordonez]

I purchased a townhouse at a tax sale in Dallas County in this month sale, the house appears to not been occupied, I driven by at night and never seen any lights on, however there is a vehicle parked there at night, I searched the licence plates and belongs to the previous owner of the house. My question is, how do I take possession of this property?

I have no experience on the process  how to vacate.