Questions & Answers about Yo voy a la discoteca contigo el sábado.
Why is it contigo instead of con tú?
Why is there an a after voy?
The verb ir (to go) is almost always followed by the preposition a (to) when you are heading to a destination. So, voy a means "I am going to" la discoteca.
Why does it say el sábado? Shouldn't there be a word for "on"?
In Spanish, you do not use a literal word for "on" with days of the week. Instead, you just use the definite article el (the). So, el sábado translates to "on Saturday".