Courses — learning paths across the 100 subjects
A course is a structured learning unit shorter than a degree but longer than a workshop. This page filters credible courses across the 100 subjects, organised by delivery mode and career stage, with the 8-intent lens applied throughout.
The 8 intents applied to courses
Who teaches the credible courses?
Universities (MIT OCW, Stanford Online, Coursera with university partners, edX with university partners), industry experts running their own platforms, vendors with deep technical content (AWS Skill Builder, Microsoft Learn, Google Skillshop), public-sector trainers (NPTEL, SWAYAM in India), and a small number of independent instructors with credible practitioner backgrounds.
What makes a course worth taking?
A clear deliverable (you finish it knowing how to do something specific), a credible instructor (someone whose practitioner work you can verify), a real assessment (not just video-watching), and a community of fellow learners. Courses with all four are rare and worth their cost. Courses with none are video collections priced as if they were certifications.
When in your career to take which kind?
Foundational courses: years 0–2. Specialist deep-dives: years 3–10 (when you know what you don't know). Executive education: years 12+ (Harvard / INSEAD / IIM-Exec / ISB). Continuing professional development: throughout, often mandated by professional bodies. Sabbatical reskilling: career-changer transitions.
Where do they live?
Online platforms dominate by volume (Coursera, edX, Udacity, FutureLearn, Pluralsight, LinkedIn Learning, Skillshare, Udemy, MasterClass, plus the SWAYAM / NPTEL / Diksha India ecosystem). In-person courses persist for fields where physical presence matters (medicine, dentistry, lab sciences, performing arts, design studios, certain skilled trades). Hybrid increasingly normal in executive education.
Why take a course rather than self-teach?
Structure, accountability, peer network, and credential recognition. Self-teaching is cheaper but failure rate is high — most self-taught learners stall at the 30% completion mark. A course's structure raises completion rates substantially. The decision is not "course vs no learning" but "course vs no completion".
Which platform / which course?
For technical depth (CS, data science, ML, software engineering): Coursera-with-university-partner, edX-with-MIT-or-Berkeley, Udacity Nanodegrees, Stanford Online. For business: Coursera-with-Wharton, edX-with-Harvard-Business-Online, the major executive-education programmes. For design and creative: Domestika, Skillshare, MasterClass. For Indian audiences: NPTEL, SWAYAM, IIT MOOC catalogues. Mode comparisons live on the "Which to pick" view.
Whose courses to avoid?
Avoid courses sold via aggressive cold-outreach marketing, courses with testimonials but no instructor track record you can verify, courses with no real assessment (just video watching + auto-completion certificate), courses with refund-difficulty signals (no refund policy or 7-day-only refund), and courses pricing in the $1,000+ range that don't cite specific employer recognition.
How to actually finish one?
The completion mistakes: signing up for too many at once, not blocking calendar time, treating it as background entertainment, choosing a course beyond your current level. The completion habits: pick one course at a time, schedule three 90-minute sessions per week, treat the assessment as the primary work product, join the course's discussion forum or community to maintain accountability, and aim to complete within the suggested timeline.
Mode navigation — courses by delivery
Subject navigation — courses by field
Per-subject course maps live on the School Is Cool hub. Pick a subject to see credible courses for that field, organised by career stage and delivery mode. The subject pages compare specific platform offerings side-by-side on cost, time commitment, recognition geography, and exit options.
Cross-references: credentials that gate roles in your subject; execution roadmaps with course timing per subject; career-changer course paths; first-job course paths.