The Webley pistol is a good gun. Depending on its condition, it should shoot well, there should be a reasonable market for it. Could be a .177 or .22. Should be marked on it. You lift the barrel to vertical to cock it. Be sure to lock the barrel down under the lever before shooting. Were good guns in their day. Can be rebuilt if required.
This appears to be Umarex, Walther CP99. It looks like an older version of the one that I have. Quality gun, accurate for a short barrel gun. Should have small round magazines that go into the "slide" when you push on the slide release. The front of the slide will spring forward. A hard trigger pull (are now anyway), but overall, a nice gun. Don't know anything about the laser under the barrel. Co2 in the magazine. You drop the magazine by pushing on the two small levers at the back of the trigger guard. Only need to press one side.
The Barnett Wildcat, also, obviously an old bow. Not an overly high grade bow, even for its day. Should shoot fine, as long as the string is in good shape. If it's frayed at all, DON'T shoot it. Also, DO NOT dry fire a crossbow. It could be damaging to the shooter. Fairly low power (90 - 100fps). The arrows (not "bolts"!), will be 16" long. Aluminum or carbon fiber only, do not use wood shafted arrows.
The little hand bow. These are made under MANY "manufacturers" names. Can't see the name on yours. Fairly accurate at short (10 - 15ft.) distances. Use small aluminum shafted arrows/bolts, with a plastic fletching (feathers). Same thing, do not dry fire a crossbow. It breaks in the middle to cock it.
Again, can't see the name on the black crossbow. But that style was made, again, under many names. Could even be another Barnett. Slightly new model than the wood bow, but not really any more complex or "better" in design. I'd bet the trigger mechanism are much, if not the same in the two larger crossbows. In any case, moderately accurate, low power (again, maybe 90 - 100fps). The arrows (not "bolts"!), will be 16" long. Aluminum or carbon fiber only, do not use wood shafted arrows.
Both crossbows should be good for backyard "plinking". Not enough power to hunt anything but maybe rabbits. Again, DO NOT dry fire a crossbow.
Can't help on the rifles.
Hope that helps some.
Mike