*Souji listens to Ellie's response while twirling a kunai* ... ok, ok. Good to see you have goals. The journey to those goals is just as important as the goal itself. Hippie advice, I know, but it's pretty real, I'd say!
Countering basic genjutsu can be done without ninjutsu training. Ninjutsu training, however, focuses primarily on weapon-based, summoning, and non-elemental techniques. It's a hugeeeeeee category that encompasses a bunch of things.
*looks at application form again* you have some elemental training already, yeah? That means you've probably gone over shape and nature manipulation with your senpais and senseis. Explain those concepts to me, and what makes ninjutsu different from elementals?
OH! And no long-winded explanations, please. Unless you want to, then I can't stop you... *shrug*. Just tell me how YOU understand it, ok?