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Arduino Uno Lcd

Arduino Uno (LCD(16x2) With Multiples Sreens(Menus) )

I want to connect on arduino uno two buttons So i can get in diffent menus of the lcd.My lcd in 16x2 and because it have 2 lines i can't put all the information i want so i want to make some menus to put my info in.How i must connect the wires and what is the code to make this possible.

 

I search in google but i found only lcd with keypad shield mine in only the lcd.Can someone help me with wiring diagram and coding?