If you're looking to develop all around musicianship skills, I *highly* recommend using the EarMaster app (for computer, phone, or tablet). It's dirt cheap ($5 / month) for real time feedback that you would otherwise be paying $30-$100 / hour ($120-$400 / month) from a private teacher, in a one-on-one scenario.

This isn't a paid endorsement :) I've been using the app to train children and adults and it is beyond phenomenal, and the price is absurdly low. Long story short: you get precise, individualized feedback for all musicianship skills at a price point that's about 1% of what you would otherwise pay.

It also has dozens of courses, from absolute beginner to quite advanced, and walks you through every sequential step in developing your skills.

ROTFL