For medical students, there are several useful links where ISM students can find notes, clinical links, e-books, articles, diagrams, question banks and discuss forums of medical students on social media and much more.
https://scholar.google.com/ – Search articles, case reports, research, journals, etc using the power of Google
https://radiopaedia.org/ Radiopaedia is the best go-to resource of radiology for every medical student and doctor. It is regularly updated and contains a huge amount of data-set.
https://www.facebook.com/groups/UsmleSteps/ – A forum for medical students in Facebook. It is spam free and has enough support and resources.
https://www.sciencedirect.com/ – A digital database by Elsevier with tons of medical pieces of information.
https://www.medscape.com/ – Every medical student’s goto reference site.
https://www.globalhealthdelivery.org/uptodate/apply – Free uptodate subscription for medical students offered by Global Health Delivery. Uptodate is the most updated clinical reference trusted by doctors throughout the world.
http://medimaps.co.uk/ – Medical wiki of high yield mind maps.
http://forums.studentdoctor.net/ – Forum thread with lots of good links, broken down by topic
https://play.google.com/store/apps/details?id=com.vivek.pocketmedbook – An android app having must know points. Also contains quizes and high yield facts.
https://www.biodigital.com/education – 3D Anatomy
http://www.columbia.edu/itc/hs/medical/neuroanatomy/neuroanat/ – Interactive neuroanatomy atlas
http://imgur.com/a/A0Kib – Simplified spinal tracts cross sections
https://stanfordmedicine25.stanford.edu/ – Clinical skills videos by Stanford Medicine Staffs.
http://geekymedics.com/ – Clinical skills videos, some other non-clinical stuff too
http://www.easyauscultation.com/ – Identifying heart/lung sounds
http://www.wilkes.med.ucla.edu/ – The Auscultation Assistant
http://www.practicalclinicalskills.com/ekg-course-contents.aspx?courseid=301 – ECG training/interpretation/practice
http://ecg.bidmc.harvard.edu/maven/mavenmain.asp – ECG interpretation practice
https://abg.ninja/ecg – Text based ECG interpretation (not image based)
https://abg.ninja/abg – Blood gas & acidosis/alkalosis practice
https://abg.ninja/stemi – ECG STEMI Morphology Quiz
http://www.embryology.ch/indexen.html – An online course in embryology
https://www.youtube.com/playlist?list=PLD7882068A01C370F – Shotgun histology tutorials
http://histology.leeds.ac.uk/ – Online histology guide
http://www.histologyguide.org/index.html – Lots of interactive slides and guides
http://www.bu.edu/histology/m/index.htm – Labelled slides
http://w-radiology.com/index.html – Navigable radiological anatomy
http://radiologymasterclass.co.uk/index.html – Radiology tutorials
http://radiopaedia.org/ – Radiology wiki with lots of articles and cases
http://www5.zippyshare.com/v/v3R7vEkV/file.html – Excel Sheets for Bacteria, Viruses, Fungi, Protozoa + Antibiotics/Antifungals
http://calgaryguide.ucalgary.ca/ – Student-authored, faculty-reviewed pathophysiology, a brilliant site
http://library.med.utah.edu/WebPath/webpath.html – Webpath, lots of stuff here
http://tmedweb.tulane.edu/pharmwiki/doku.php/ – Pharmacology wiki
http://i.imgur.com/yOFsL7H.png – Antibiotics usage spectrum
http://i.imgur.com/rADmmfy.jpg – Antibiotics summary page
https://i.imgur.com/Vu6MG9K.png – Antibiotics classifications table
http://handwrittentutorials.com/ – Handwritten tutorials (basic but helpful)
https://www.khanacademy.org/science/health-and-medicine – Khan Academy (basic but helpful)
https://embryology.med.unsw.edu.au/embryology/index.php/Main_Page – Absolutely everything pertaining to embryology
http://www.commonrounds.org/ – Lots of topics covered, also includes mind-maps to go with each section
http://emergencymedicinecases.com/ – Emergency medicine, really interesting
http://emcrit.org/ – Emergency medicine
http://www.emrap.org/ – Emergency medicine and primary care
http://podbay.fm/show/254707344 – ICU rounds
http://www.smartem.org/ – Scientific Medical And Research Translation, lots of topics covered here
https://www.youtube.com/user/khanacademymedicine – Khan Academy Medicine, a collection of video tutorials.
https://www.youtube.com/user/armandohasudungan – Illustrations by drawing for medical students
http://med.umich.edu/lrc/coursepages/m1/anatomy2010/html/courseinfo/mich_quiz_index.html – Anatomy
https://abg.ninja/ – Various medical quizzes
https://quiz.docstudents.com/ Website to practise MCQs from all the medicine, surgery, pediatrics, basic science arranged subjectwise.