1)How do you make a shooting gallery???
2)How do you make a movie of riding a coaster???
3)Who can make me an intro and custom gui???
Plz answer as i have written.
Hm, I really think you should spend more time reading the manual and experimenting with the features a bit by yourself.
Your questions seem a bit arbitrary, and not very thought through.
If it's your first game I would advise using the ready made GUI's, although, there are tutorials for making them here (http://ags.slaveinostudios.com/guis.html)
No 1 and 2 will require some major scripting, so please, read the manual ;)
Actually, shooting galleries just have to have a cursor, that when you click on a moving object, it dissaprears from the page. Quite simple, but to make one with a HUD style display, would take major scripting.