Well you've found yourself in a unique place. We can help, a lot. We've seen amazing launches with grandeur that can be hard to imagine much less believe. We've also seen launches that went so poorly, calling them a launch is probably a disservice to others who have launched in the past.
Well, for starters, someone who can cook a little, so if you can't, that's ok, but, you're going to be really dependent on staff to make the magic happen. Just like any business there are many facets to launching a new food truck business. Sometimes an owner is great at the business side and light on the culinary side, that can be a good thing when properly harnessed and team members are actually counting on one another.
Forming an entity like an LLC or Corporation will certainly fall on some of your first to do's.
Then filing with the IRS to get a Tax Identification Number.
Next you'll file for a Department of...