
kzyc welcome to the community.
If you are looking for value, most stamps do not bring it because of the massive printing of stamps since the early 1900's. Most stamps are printed at a rate of close to 1/2 a billion or more. That is one stamp for every person in North America, and only a small percentage of people are collectors.
If you would like to identify and value a lot of stamps quickly, your local library would likely have a stamp catalogue that would help you. Personally I use the Scott catalogue, but there are other good catalogues too.