There are several things you can do. I found a few videos on "you-tube". You could also contact Daisy directly on there web page and ask for an owners manual.
I do know that the pin on the red cartridge must be in the up position, and each pellet must be loaded individually
Consult the user's manual
Are you asking about a gun or a rifle. Which model are you asking about. Daisy had made over a 100 different BB guns and rifles
Your best bet is to ask Daisy directly. Daisy offers a free service to tell you about your old Daisy. See the link below.
CO2 powered weapons are usually fitted with a removable cartridge - which is stored in the handle of the gun.
Get a manual from Daisy. Daisy Outdoor Products P.O. Box 220 Rogers, Arkansas 72757-0220 (800) 643-3458
All Daisy model 25's load the same. You unscrew he end of the barrel and pull out the loading tube. It's pretty self evident when you see it.
The model 102 rifle is loaded by removing the cap on the end of the barrel.
The Crosman 120 is a rifle not a gun. It is a break barrel. Cock the barrel all the way down and load a pellet into the rear of the barrel. Pull the barrel back up and it' is ready to fire.
The model 288 is a 24 shot BB gun that is loaded from the right side. There is a slide cover directly above the trigger that you slide forward to load the BB's
To load a Daisy Model 99 BB gun, first ensure the gun is pointed in a safe direction and is not cocked. Open the lever to access the BB reservoir, then pour in BBs until it's full, usually around 50 BBs. Close the lever securely, and then pull back the cocking mechanism to prepare the gun for firing. Always remember to follow safety precautions while handling and using the BB gun.
Your question is not clear. Are you asking, how to load and aim then shoot? Please rephrase your question and be clear about what you are asking. Also I think you are asking about a Daisy Model 1894 but I am not sure this is what you are asking about.
Daisy started in 1895.