Just read the comments I made in my example code. Tell me if there is something specific you don't understand in it. Change the path in the "load image" to one of your tank image.
`manually control screen update
sync on
sync rate 0
`hide the mouse
hide mouse
`load the tank image
load image "D:\aliens.jpg",1
`make the tank image into a sprite
sprite 1,0,0,1
`position the sprite in the middle of the screen
move sprite 1,-screen height()/2
rotate sprite 1,90
move sprite 1,screen width()/2
`make the sprite 15x15
size sprite 1,15,15
`make it so that the sprite will rotate around its center
offset sprite 1,sprite width(1)/2,sprite height(1)/2
`main loop
do
`update screen
sync
`control sprite
move sprite 1,(upkey()-downkey())*0.2
rotate sprite 1,sprite angle(1)+(rightkey()-leftkey())*0.2
loop
