Use a catalog to find values. There are several available online, such as Mystic Stamps. You can also find paper versions at most public libraries.
An easy way to find good value for your stamps is to buy a stamp magazine. Linn's is a good one.
There are a number of online stamp catalogs available, some do charge a fee. Others have a catalog with prices to purchase stamps from them, but it can give you and idea of value.
If they are the non-denominated US stamps, there is an identifier on the USPS web site. For collector values, check an online catalog, such as Mystic Stamps.
There are many ways one can learn the value of stamps from Japan. One can learn the value of stamps from Japan at popular on the web sources such as Baxley Stamps and Herrick Stamps.
The could be of value. It would require proper identification to find whether the value is more than just a nominal one. Consult a catalog of postage stamps to identify and determine value.
There is no easy way. You will have to identify the stamps and their condition and then match them against the catalogs to find their retail value. For many collectors this is the fun of collecting, hoping to find that $100 stamp in a collection they paid $5 for.
If you are on a tight budget and are looking for affordable cheap stamps I would start by looking at Walmart, Super Value and carousel checks. Those all offer affordable cheap stamps.
Value entirely depends on what stamps are in the album. Without knowing what stamps, country and condition, it's impossible to value.
Online sites that have stamp value guides include Stamp Collecting Resources, Stamps Site UK, Hobbizine, Find Your Stamps Value, Stamp Treasures and Mystic Stamp.
Top Value Stamps are no longer in circulation. They were a redemption program where stamps were collected and exchanged for merchandise from a catalog. If you still have Top Value Stamps, you would not be able to redeem them as the program no longer exists.
It may have value if you can find someone to buy it from you. A postage stamp has value, but not anything that you can demand. You can't hand one to a clerk in a store and they have to take it.
That will depend on the specific stamps. Condition, face value, mint or used, heavy cancellations will all play into the value. You will have to consult a postage stamp catalog to find out the specifics.