For enthusiasts and scholars. Everything below was free at the time of writing (November 2026). Links age; the institutions behind them are the durable part.
(8.370x).** Quantum foundations, protocols and algorithms — including Shor's — with all materials usable without enrolling. Beginner-to-intermediate. https://ocw.mit.edu/courses/8-370x-quantum-information-science-i-spring-2018/
Shor's own graduate course: the factoring algorithm, error correction, quantum cryptography. Lecture notes and problem sets included. Intermediate-to-advanced. https://ocw.mit.edu/courses/18-435j-quantum-computation-fall-2003/download/
built on Qiskit, from Basics of Quantum Information up to graduate-level series by John Watrous. Free to all. https://quantum.cloud.ibm.com/learning
The dedicated course on this book's subject — lectures plus hands-on labs with ML-KEM and ML-DSA. Free to audit; UMBC's open teaching module carries the slides, syllabus and exercises. https://est.umbc.edu/teaching/pqc-teaching-module/
for Everyone (edX).** A true-novice start; basic algebra is enough. Free to audit. https://www.edx.org/learn/quantum-computing/university-of-chicago-introduction-to-quantum-computing-for-everyone
quantum basics to the quantum internet. Free to audit. https://www.edx.org/school/delftx
hub: status, migration guidance, and the IR 8547 timeline. https://csrc.nist.gov/projects/post-quantum-cryptography
FIPS 203 (ML-KEM), FIPS 204 (ML-DSA), FIPS 205 (SLH-DSA) — with the Falcon standard (FN-DSA) in development. https://csrc.nist.gov/Projects/post-quantum-cryptography/pqc-standards
including the post-quantum drafts of Chapter 8. https://github.com/bitcoin/bips/blob/master/README.mediawiki
working reference for native Falcon accounts: generation, fees, rekeying, the algokey pq commands. https://dev.algorand.co/concepts/accounts/post-quantum/
State Proofs since 2022, native Falcon accounts since August 2026, and what remains. https://algorand.co/technology/post-quantum
cryptographers designing and attacking the schemes post here. Subscribe to post; the archive is public. https://csrc.nist.gov/projects/post-quantum-cryptography/email-list
(home of RFC 9958, Post-Quantum Cryptography for Engineers). Public list and archive; anyone may join the discussion or submit a draft. https://datatracker.ietf.org/group/pquip/
certificates and signed mail — including the FN-DSA drafts. https://datatracker.ietf.org/group/lamps/
reference library for the new schemes, now under the Linux Foundation's Post-Quantum Cryptography Alliance. Development is public on GitHub; the project's own warning stands: not yet for production use. https://openquantumsafe.org/ · https://github.com/open-quantum-safe/liboqs
of the new standards (mlkem-native, mldsa-native) — the living continuation of the retired PQClean project's mission. https://github.com/pq-code-package/mlkem-native
new results appear here first, free to read. Author-posted — read as work in progress. https://eprint.iacr.org/
cryptography meet. No proceedings; talk recordings are posted free. (Attending in person is a paid event.) https://realworldcrypto.iacr.org/
Quantum Resistance topic page that tracks Bitcoin's post-quantum debate proposal by proposal. https://bitcoinops.org/en/newsletters/ · https://bitcoinops.org/en/topics/quantum-resistance/
list — the post-quantum proposals are argued here first. (The list moved from its old Linux Foundation home in 2024.) https://groups.google.com/g/bitcoindev
threads included. Read freely; posting is research-grade. https://ethresear.ch/
help, the developer portal and Discord are the live doors. https://forum.algorand.org/
time on real quantum hardware — enough to run the classic demonstrations, including Shor's algorithm, yourself. https://www.ibm.com/quantum/products
the new schemes, with test vectors and benchmarks. https://github.com/open-quantum-safe/liboqs
nginx, OpenSSH, OpenVPN) and a public test server for quantum-safe connections. Partially maintained — contributors wanted, says the project itself. https://github.com/open-quantum-safe/oqs-demos
network on your own machine, and the commands to generate and sign with a real Falcon-1024 account — the account type live on mainnet today. https://dev.algorand.co/getting-started/algokit-quick-start/
algokey pq. Algorand's free toolkit: a localthe whole chain, counted in the open: on 1 November 2026 it put 7,126,359 BTC (about 35.4%) at risk, split between always-exposed and reuse-exposed. The numbers in Chapter 6 come from here and its peers; check it for the current count. http://chainquery.com/reports/quantum-exposure
address, searchable, with the reason it is vulnerable; the underlying query is open source. Its counting runs broader than ChainQuery's — the two together bracket the truth. https://projecteleven.com/bitcoin-risq-list
standards themselves; Bitcoin Optech (above) is the weekly digest for Bitcoin's side of the story.
Compiled November 2026 from the live pages. One honest exclusion: no Coursera course appears, because no course page there could be found stating its free-audit terms plainly — rather than guess, the shelf leaves the space empty.