Courseware

• MIT's OpenCourseWare
• Coursera
• edX
• Udacity
• TED
• ivesrity
• Khan Academy
• w3 schools
• Repl.it
• Tutorials Point
• Future Learn (UK)
• Berkeley webcasts
• Open Yale Courses
• Academic Earth

e-books

• Οpen Access Books
• Google Book Search
• O'Reilly's CD bookshelf
• Free Online Computer Science and Programming Books, Textbooks, and Lecture Notes
• Text Book Revolution
• Free book centre
• The Online Books Page
• Digital Book Index

e-references

• Wikipedia
• Greek National Documentation Center
• University of Macedonia Library
• Google Scholar
• Open Access Journals
• Scopus
• Association of Computing Machinery
• IEEE-Computer Society
• Society of Industrial and Applied Mathematics
• Institute of Engineering and Technology
• Math World
• Computer Science student resource guide

Terminology translation

• IATE
• Google translate