Welcome to the world of collecting stamps or "stamps", allstamps!
If you have a willed WW collection, stamp values should not be big concern. Most likely the values will be nominal.
The focus should be on learning what you have and organizing them in a way meaningful to you.
There are many on-line sources for "value" but unless you have stamps of significant value, spending time in that area is not that productive or rewarding unless you are selling your collection, in which case just send them off to a dealer or auction house and they will tell you value.
What are my stamps worth:
1.
http://www.stamp-collecting-resourc...-values.html2.
https://www.youtube.com/watch?v=jrRdLEjVH8k3.
http://stamporama.com/articles/disp...ASd3nKLqcQNo4.
http://www.stampcollectingblog.com/...th-money.php5.
http://www.wikihow.com/Find-The-Value-Of-a-Stamp6.
http://album.dweeb.org/albumvalue.html7. etc., etc., etc. ....
Enjoy our collection and have a great time examining them before being concerned about worth or value.... value is most in the enjoyment of collecting and learning.