Free stuff! As with anything Dr Choo Yan Min (EconsPhDTutor) does, any feedback welcome! (And please do tell me if you spot any errors, thanks!)

📚 Free Stuff & Textbooks

Written by me. Completed or updating:

• H2 Mathematics Textbook: PDF download link (≈50MB, may take 1 min or more to download). Or view in browser (current version: 2024-04-08).

Working on it:

• H1 Mathematics Textbook: download PDF or view PDF in browser (version: 2017-04-01).
• H2 Economics Textbook: download PDF or view PDF in browser.
• H1 Economics Textbook: download PDF or view PDF in browser.
• List of IB Economics Definitions (written 2021): Google spreadsheet

Future books:

• General Paper Textbook
• H2 Further Mathematics Textbook
• O-Level Mathematics Textbook
• O-Level Additional Mathematics Textbook

Other small things I wrote back in 2016:

• H2 Mathematics Cheatsheet: Download PDFs: colour, black & white.
• H1 vs H2 Mathematics: What’s the Difference? Which Should I Take?: download PDF

💸 Free and Legal Online Resources

• Singapore’s National Library Board’s eResources is pretty good.

(Though unfortunately the NLB’s webpages can be slow and painful to use.)

Singaporeans (and possibly others) can sign up for their myLibraryID and get free access to a bunch of good stuff, most notably JSTOR. (Tip: You can then also create an account on JSTOR and keep logged in there, which will save you the pain of going through NLB’s pages.)

NLB > Libby has The Economist!

For books in the public domain:

• Archive.org.

Archive also has many books available for either 14-day or 1-hour borrowing. You can view these on Adobe Digital Editions only for said period. (But there may exist methods for downloading a PDF copy and keeping it permanently. As usual, Google is your friend.)

Separately, Archive’s Wayback Machine archives webpages and is often useful. A similar site is Archive.is.

• Gallica (French national library).
• Google Books (select “Full view only”).

🏴☠️ Totally Illegal Resources You Should Never Use

(But if you do choose to use these resources, you’ll find they’re really awesome. Or at least that’s what I’ve heard. Obviously, I’ve never actually used any of these resources in my life.)

Google is your friend:

• “Holy Grail Mark 6” for exam papers
• Library Genesis for books
• Sci-Hub for academic articles
• AudioBook Bay for audiobooks (including The Economist!)
• “Bypass paywalls” to read Financial Times, New York Times, Wall Street Journal (and more)
• “DownMagaz” for The Economist PDF (and more)