Help No storage on zte

Can someone please help me? And explain to where I can understand? I don't know MB,GB,root,etc. My old phone I could transfer apps to an SD card to save on my internal memory but with this zte phone I can't. Is there anything I can do to be able to have more then 2 apps at a time? It's killing me on my data and unfortunately, hard to get wifi out here without leaving the house.