Hi mkhan, welcome!
Ask Phil (a play on the word philately, or the study of stamps) is a good reference site for beginners. Except for the bright red colours they use sometimes. Wear sunglasses.

http://www.askphil.org/If you have a lot of each stamp then it may be that you have mostly common stamps. Maybe. It is the search for that rare stamp hiding amongst the many that drives us on on some days. But mostly it is the fun of learning and sharing.
You can just collect. A lot do at the start. If the stamps are mostly used or cancelled with postmarks or such then a paper-paged album and little glassine (kind of waxy paper), gummed hinges to mount the stamps onto the pages will usually be fine. (They can be soaked in water to remove them.)
Don't be over-whelmed. Some of us would love to have all those stamps to look through. Just do it a bit at a time, as you can and can handle.
Separate into countries first. Maybe you just want to collect a certain country or a range of years from a certain country. Maybe a topic like ships or animals or cancels from certain places or times. Or everything. Some collect everything.
You do not have to do it a certain way at all. Stamp collecting and philately (sometimes separated) are always dependent on what the individual wants to do. There are some popular areas and they change too depending on where you are or are from in the world or your own interests.
Mostly I find a person's tastes and desires change a bit or broaden out or narrow as the case may be over the years. I mean, you can't know everything, that's why we are here, oops, I don't mean me either.
I was just into collecting a certain type of stamp from one country for years. You do what you can do. Now, though, reading on Stamp Community (SCF) I have found myself drawn to many new areas and interests. When you see how someone else does it, it kind of inspires you and you feel you can't do something until you know something about it ut now you do, same as you are asking right now.
Just think, you have learned something good already! Don't read past a certain point in my longish posts without some coffee or caffeine by your side.


If you don't make mistakes you aren't learning anything.