LaunchBox’s website contains everything you need to get started. It contains downloads, forums, plugins, themes, and more. Their YouTube channel also contains update videos and a ton of tutorials for getting various systems running.
Artwork for your cabinet is how to make that baby sing! There are a myriad of options, and the company you got your kit from should provide the dimensions of the sides, control panel, and marquee. There are companies that you can get predesigned artwork from. You can either go with that or, if it’s at all possible, contact a graphic designer or artist to create it. Sites like DeviantArt, Fiverr, freelance sites, and even independent comic book artists should have no problem designing your dream design. There are companies that you can use to print the vinyl adhesive which you then put on your cabinet.
The only major thing with attaching the artwork to your cabinet is what’s called the wet vs dry method. Since there is adhesive under the vinyl artwork. Think of it as one huge sticker and you’re attaching it to one big surface. There are pluses and minuses to both, but the wet method generally easier for people who are unfamiliar with it. In a nutshell, the wet method allows you to slightly move the vinyl artwork in case it wasn’t lined up correctly, and then you squeegee out the liquid which allows the adhesive to stick.
I’ll link some YouTube videos later that outlines both, but note that the wet method won’t work if your cabinet is made from MDF.