Welcome! Before diving into a new project you should really read the wiki. Then read the forums. Then use the search function for some basic questions you still might have. Then read the wiki again. Then ask a specific question if you are still lost.
Your post is really really ambiguous - you may or may not need some MDF or plywood, glue, buttons, a trackball, a GT board or computer, a coin door, a marquee, some side art, a CPO, some t-molding, lots of tools and lots of other stuff that I know I'm leaving out.... but then again, so does just about every single project.
