Coursera (https://www.coursera.org/) and EdX (https://www.edx.org/) have tons of free courses! I LOVE these two sites. 

I really liked The Science of Happiness (https://www.edx.org/course/the-science-of-happiness-0), by Berkeley University.

Here are some others I bet you all would like! I haven't taken them all, but they're on my "to-take" list. 

Paradox and Infinity (https://www.edx.org/course/paradox-infinity-mitx-24-118x-0)
The Science of Well-being (https://www.coursera.org/learn/the-science-of-well-being)
The Conscious Mind - A Philosophical Road Trip (https://www.edx.org/course/the-conscious-mind-a-philosophical-road-trip-0)
Buddhism and Modern Psychology (https://www.coursera.org/learn/science-of-meditation)
Existential Well-being Counseling: A Person-centered Experiential Approach (https://www.edx.org/course/existential-well-being-counseling-a-person-centered-experiential-approach)
Know Thyself - The Value and Limits of Self-Knowledge: The Examined Life (https://www.coursera.org/learn/know-thyself-the-examined-life)
Mindshift: Break Through Obstacles to Learning and Discover Your Hidden Potential (https://www.coursera.org/learn/mindshift) 
Philosophy and Critical Thinking (https://www.edx.org/course/philosophy-and-critical-thinking-0)

I'm going to just directly give you everything I know about mentorship. My advice is somewhat machiavellian and heartless, but I really want you to embrace love.
You can't get mentorship by directly asking your idols. Because most people will start hating you as soon as you stop helping them. A good way to get mentors is to help your idols in ways that you can help them. As soon as you stop helping them, they will stop helping you back, and they will start hating you. There is no guarantee that a single person is going to help you back. But, if you help multiple people, some of them will help you back. You can't afford to invest too much time or energy on people who are not going to help you back. When you radiate love(e.g. help people), people will want to help you back. When you try to sap love out of people, you become a love vampire, and they will avoid you. Don't ever call your mentors mentors. Don't even mention mentorship. Mentorship is not an official relationship. It is an informal relationship that grows organically over time. Ryan Holiday has good articles about mentorship. Just search google for "Ryan Holiday Mentor" There's a book named `Real artists don't starve`. This book contains a good section about mentorship. Help your idols, not because you want to be helped back, but because you want to help them. There is no way you are going to keep helping them if you help them for purely selfish reasons. You have to become selfless to help and love your idols. If you satisfied your growth needs by reading books, you wouldn't strictly need mentors. If you grew compassion and didn't need mentors, you could focus on helping your mentors. Then, some of your idols will want to help you back. You can then focus your energy and time on those who help you back. Use books and various kinds of learning materials as your favorite mentors such that you won't strictly need human mentors. Your neediness will turn off your potential mentors.
A good way to help them is to become a fan or a patron. Becoming a patron doesn't necessarily mean financial support. You can help them with logistics, emotional support, and various other things. You can also help them sell their work by doing a good interview with them, give them some useful tips they didn't know about, and so on.
Serve your idols because you want to. That's going to maintain relationships over time.
In a sense, stop thinking about mentorship. You're not going to get the kind of mentorship you thought you were going to get. Start thinking about helping your idols. Just by being in their social circle, inspirations and gratuitous tips will fall upon you. Or, you can create a social circle. As you grow, mentorship turns into mastermind groups where peers help each other.