Microbiology
Coursera
A Lecturio-produced Coursera module introducing bacteria, viruses, fungi, and protozoa, plus bacterial structure, metabolism, and genetics. Completing it, you can distinguish Gram-positive from Gram-negative organisms and describe how microbes generate energy.
More resources on Microbiology
Microbe Online
Laboratory-medicine reference blog by microbiologist Acharya Tankeshwar, with notes on bacteriology, virology, mycology, parasitology and immunology, plus self-test MCQs. Especially strong on diagnostic tests, staining, culture media and biochemical identification, so learners can understand how clinical specimens are processed and interpreted.
khanacademy.org/science/biology
Khan Academy Biology offers free, expert-led video lessons, practice questions, and quizzes to support introductory biology learning. It covers core topics from cell biology and genetics to evolution, ecology, and physiology.
Textbook of Bacteriology
Kenneth Todar's free online bacteriology text from the University of Wisconsin-Madison, covering bacterial structure, growth, metabolism, genetics, and pathogenesis. Readers finish able to explain how specific bacterial pathogens colonize hosts and cause disease.
MicrobeWiki
A Kenyon College-hosted encyclopedia of microbial species, habitats, and pathogens, written and maintained as student coursework under faculty supervision. Best used for quick orientation to an unfamiliar organism before consulting primary literature.
Antimicrobial Resistance
Explore antimicrobial resistance and its impact on global health in this microbiology course from the University of Dundee.
Introductory Biology (MIT 7.016)
Biochemistry, molecular biology and genetics, from gene and protein structure to how molecules build cells and organisms, with a chemical biology slant applied to cancer, virology and therapeutic design. Includes 35 lecture videos plus problem sets and exams with solutions.