how do you say 'give it to me'
Dámelo if referring to a masculine noun.
Dámela if referring to a feminine noun.
Also there are indirect commands-
(Quiero) Que me des... and then whatever you are referring to.
That you give me... (I want you to give me... or Give me...)
For example, if your little brother or sister took your car key you could say, "dámela". and if they say no, you could respond, " que me des la llave."
Or in the same situation... dáme la llave... que me la des.
In the tú or informal It doesn't have an accent on the 'a'.
In the informal tú it should be: Dame lo (masucline) Dame la (femenine)
In the formal usted it should be: Deme lo (masucline) Deme la (femenine)
In the plural usted, ellos, ellas it should be: Denme lo (masucline) Denme la (femenine)