Germany, Hungary, Italian East Africa, And Belgium

Can anyone tell me if these are worth anything?

I don't have a catalog handy, but the Hungarian airmail set, hinged, you can probably purchase for $3.00. If mint never hinged, the catalogs more but on ebay you can buy a set to $4-5.

These are nice stamps and I have most of these in my own collection. But all are common with little monetary value. To a collector they'd be worth (at best) a few dollars for each set. As a general rule, if the stamps were cheap a long time ago, they're going to be cheap today and will be cheap in the future. If you're looking at sets of stamps on old pages advertised for a few cents like these are, they're going to be similarly inexpensive today, with very, very few exceptions.

thanks everyone, I just came across several different sets of stamps while cleaning out my father in laws home and it is so overwhelming as to where to start with his huge box of stamps

I'd do a search for a local or nearby collector's club; the members there would probably be happy to help and could probably tell relatively quickly if there's anything of much value. Also, most decent sized libraries will have copies of the Scott Standard Postage Stamp Catalogue, which lists and values almost every (postage) stamp made. Just keep in mind that the values you see there are nowhere close to reality. Most stamps' true worth is a small fraction of the prices listed in those books, but they are useful in identifying the stamps and getting somewhat of an idea of value.