REGISTER OF LEARNING IMPORTANCE/PRIORITY HIGH-PRIORITY: Cryptography -> Symmetric Ciphers, specifically AES in Block Ciphers. Physics -> Oscillations Electromagnetism. MID-PRIORITY: All of the existing Calculus notes. LOW-PRIORITY Salsa20, ChaCha, and Trivium content for Symmetric Cryptography. 3DES for Block Ciphers. Astronomy All unestablished subjects: Nuclear Engineering, Aerospace Engineering, etc.