Thanks could you do a list of all weapon model ID aswell?

I'm new and have a couple of questions about modding with Scripthook and that.

How would I Manipulate every type of ped in the world? this is what i've tried but can't figure it out.

foreach (Ped Zombie01 in world)
{

}

Also making a weapon spawn on the ground? I've tried this but not sure about the pickup type field?:

World.CreatePickup(weapon ,Pickup,Game.Player.Character.Position, WeaponHash.AdvancedRifle, 600);

I've been looking for tutorials can't find much stuff that shows about this and I'd also like to implement custom models/sounds?

Thanks for reading sorry if this is really basic but i can't find any tutorials maybe you could link me if there is some good ones?

I'm trying to call these functions, the text display works but the peds or cars don't get removed? anyone know why?

here is the Source Code.

Many Thanks.