Translation: What do you need to drive?
"Manejar" means to drive. "Conducir" is more commonly used.
Manejar mean to drive
Necessary is necesario in Spanish. Necesitas definitely means "you need" in English. It is the informal "tu" form of the verb Necesitar.
You can say "Necesitas aprender español". A couple of things to note: names of languages are not capitalized in Spanish. Another is that the personal pronouns are not normally used with a conjugated verb. "Necesitas" can only mean "you need", so the pronoun "tú" would only be used for emphasis.
"Que necesitas hacer" means "What do you need to do" in English.
In Spain "manejando" derives from the verb manejar which means "to manage" or "to handle" so it means "managing" or "handling". In some parts of Spanish America it is more often used to mean "driving" ( a vehicle ) instead of "conduciendo" from the verd "conducir" ( to drive ).
You need good days.
"Quien necesitas" means "who do you need" in English. It is a question asking about the person that is needed or required for a specific situation.
You don't need words. or No words are necessary.
"¿Qué necesitas para el colegio?" means "What do you need for high school?". The word "colegio" does not mean "college". That would be "la universidad".
But you need a calendar
"tú necesitas una calculadora"= you need a calculator