I would like to share with you a list of high quality online educational materials that I gathered along the time, as I know how difficult it can be to filter through all the information out there, especially if you are at the beginning of your career in this field.

• The Interaction Design Foundation. They have a vast range of top-notch courses in fields like UX Design and UI Design.

https://www.interaction-design.org/courses?ep=mb

I also discovered other very good alternatives for learning Interaction Design online.

• Paid courses

    The Graphic Design School | Graphic Design Courses
    Learn UI & UX design skills part-time & online
    Web Design Tutorials by Envato Tuts+
    Udacity - Free Online Classes & Nanodegrees
    Udemy: Online Courses Anytime, Anywhere
    User Experience Design Training & Consulting--UX Design Edge
    Online and Classroom UX Training
  

• Semi-paid courses

   AcademicEarth.org - Free Online Courses From Top Colleges
   Acamica
   Free Online Courses & Online Learning from ALISON
   Online Training on Professional Courses and Certifications by Experts
  

• Other resources

   52 Weeks of UX
   Allen Interactions | Custom e-Learning Design and Development
   Big Think
   Videos and webinars from business experts
   Online IT Training Videos, IT Certification Training | CBT Nuggets
   Channel 9: Videos about the people building Microsoft Products and Services
  

I hope this helps. If you need more info or resources in the Interaction Design field, do not hesitate to hit me with a comment or a private message. I’ll be glad to help.