1. Proper -Where the top number (numerator) is less than the bottom number (denominator).
e.g. 4/7, 1/2, 9/15
2. Improper -Where the top number greater than the bottom number.
e.g. 6/3, 12/7, 4/3
3. Mixed -When there is a whole number with a proper fraction.
e.g. 1 and 1/2, 3 and 4/7, 5 and 8/12
Here's a video explaining Fractions!:
(It is kind of long so you may want to skip some parts that you don't need)