"Now it is your turn."
Translation:Jetzt bist du dran.
In a statement, the verb should usually be in the second position. You can say "Du bist jetzt dran" or if you bring "jetzt" to the beginning, you have to move the subject "du" after the verb to make sure the verb stays in the second position: "Jetzt bist du dran"
Keep in mind that the first "position" is not necessarily the first "word", because the first position might include the subject and its adjectives (i.e. The whole phrase "Der Mann" could go in the first position, not just "Der")
Also keep in mind that subordinate clauses have their verb at the end instead: "Ich weiß, dass du dran bist" The independent clause "Ich weiß" is the one that has the normal verb placement.