Software Recommendation To Id, Value And Catalog Collection

We recently inherited a stamp collection from my father-in-law. I'd like to find a good software pkg that can help identify the stamp and catalog it. Additionally a ballpark value for insurance purposes. We know nothing about stamps / so lots to learn. Any recommendations? The stamp collection includes stamps mounted in books ok paper, those in plastic. A lot just loose in a box.

Thsnks in advance for your advice.

Before that, why not post some pictures here, but only of stamps pre-1943;or if after 1943, stamps with a face value of $5 or more (or the equivalent amount in foreign currency). Stuff after 1940 or so, with rare exception, has little value used and only a percentage of face value if unused.