Short course, no major budget needed, depends what your skillset with code is, if you are doing the scratch thing, or looking at something like JavaScript, which is lightweight enough, doesn't require as many resources, and can have instant results (when paired with HTML and CSS) but it all falls back to your own skillset and what you like. Kids will pick anything up, and will definitely know more than you do by the end of it, so have fun with it. Remember too its for everyone, and can bring through a range of skills from art, design, language, problem solving etc...