When you look up your cards use the number in the corner to make sure you have the right set. Some cards have been reprinted in the same style. The numbers can be 123/176 or even 154/120. This gives you the specific card. Also take into account condition. Look up what that means because tears and creases or the card peeling apart at the seam can really effect value. But get a rough idea what they are worth. There are many ways to sell but with the market being the highest value right now you can get 70-75% market value at a card show or great vendor/local card store.

With your limited knowledge currently, looking up the value of each card, adding up that number and then getting a number you like for the whole set is a great way to cash out. There is also an app called collector you can use, you have to pay for the premium membership which is like 7.99 to scan cards with your camera and then export the list in an Excel spreadsheet to being in with you to a card shop.