Quartiles/Normal Distribution Question

#1
I am having trouble with this question? Any suggestions?

Quartiles: The median of any Normal distribution is the same as its mean. We can use Normal calculations to find the quartiles for Normal distributions.

a) What is the area under the standard Normal curve to the left of the first quartile? Use this to find the value of the first quartile for a standard Normal distribution. Find the Third quartile similarly?

DOn't need the answer as much as I need help learner how to figure it out. I'm new to Stats, as you probably can tell!