One-Time Membership – Full Digital Library Access
This one-time membership unlocks ad-free access to my complete digital STEM library, designed as a permanent reference for serious students who want everything organized in one place without subscriptions or distractions.
What This Membership Includes
- Full access to all eBooks
- Complete Ultimate Crash Course Series
- All Ultimate Cheat Sheets
- Lifetime access to all future updates to eBooks, crash courses, and written lessons
- Ad-free reading and study experience
- Structured content meant for long-term reference, not short-term cramming
Subjects Covered
This membership covers the full foundation required for college STEM majors, including:
- College Algebra
- Trigonometry
- Precalculus
- Calculus I, II, and III (all major topics)
- Linear Algebra
- Differential Equations
- Vector Calculus fundamentals
- Physics: Mechanics and Electromagnetism
- Mathematical notation, problem-solving methods, and study strategy guidance
Important Note About Video Lessons
This membership provides full access to written lessons, PDFs, eBooks, and updates.
Video lessons are not included.
To access the complete video lesson library, you must also hold an active membership via:
YouTube.com/@AuthorJonathanD
Who This Membership Is For
- Students who want a single, reliable STEM reference library
- Learners who prefer textbooks, structured notes, and written explanations
- Anyone rebuilding their math and physics foundation properly
- STEM majors who want lifetime access without recurring fees
One Payment. Permanent Access.
Pay once and keep access for life to everything in the written Crash Course and Cheat Sheet ecosystem, with continuous updates as new material is released.
