Well, you can now with Learncliki! This new service allows you to log in, select a topic you want to learn more about and have a face to face, live tutorial with a tutor who you can ask questions of in real time and really tailor the session to your needs. There's a variety of subject areas from academia to hobbies and interests, so whatever you're keen to learn more about, you're likely to find it here!
Or if you've got a skill that you think others might want to learn, you could always sign up as a tutor and impart your knowledge, whether it's about floristry, fashion or finance! What are you an expert in?
For more information about LearnCliki whether you're interested in being a learner or a tutor, visit http://www.learncliki.com/