Pickup mess ????!!!!!

Hello together, I would really like to buy a pickup and first of all have the models of Chevrolet in mind. However, I really don’t see what there are for models. 1500, 2500, 3500, S-10 and and and and. What does all this mean? Describe the types the engines or the size of the pickup? Can you explain to me what all this has on it? Maybe you can even recommend one to me. I am looking for a pickup that must be suitable for everyday use. Is there a big pickup with a V6 engine at all? Should it look like an Ami and not like a Toyota or something like that? I think the cars seem so big and huge just great. Would be great if you can give me some tips. THANK YOU MFg JK