This is a comprehensive conceptual (and technical) explanation of Monero. I will be updating periodically, and publishing full editions when they are complete.
The first edition was published on getmonero.org in the Library section: https://getmonero.org/library/
Complete content:
-Monero transactions (first edition)
-Monero blockchain (first edition)
-multisignatures (second edition)
Future content:
-bulletproofs (second edition)
-security proof appendix (second edition)