Wow, there are too many. Just do a search on "what color gi should I wear, when is ok to wear a Hakama, how do I transport a jo or bokken on a motorcycle." The list goes on. None of these things will help your Aikido. Wearing a Hakama and you just started Aikido yesterday does nothing for your technique, maybe hinder or cause you to be tied up. Probably used against you in a sparring situation. Too much focus on superficial things. I think you get the point.
Reuben Yap has the right perspective.
Thank you Salim. I didn't know you were an advocate of naked sparring. Do you have females at your dojo? I must visit sometime.