I have no clue what I'm looking at!!

killer26

Basically how does one go about finding out, with as little research etc. as possible, if his stamps are valueable or rare? I inherited my father's massive beautiful coin collection amd in that collection there is a decent amount of stamps as well. Coins were his passion so he has some really good stuff in that genre, but as for the stamps I wouldnt know if these are of the same standard as his coins. Any help would be greatly appreciated!