Please help me with this?

ok, is there like any websites i can go to ... bc i have 3 pictures and i want it to be one image like ( THIS IS THE FIRST PICTURE ) 2 seconds later ( 2ND PICTURE ) 2 seconds later ( 3RD PICTURE ) .......... it changes fast to the next pic.. naw mean? lol hard to explain , i cnt show u a picture bc i have no idea whats it called so pretty please help me!