mkdir "01 Classical Mechanics"
cd "01 Classical Mechanics"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PL47F408D36D4CF129
cd ..
mkdir "02 Quantum Mechanics"
cd "02 Quantum Mechanics"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PL701CD168D02FF56F
cd ..
mkdir "03 Special Relativity and Electrodynamics"
cd "03 Special Relativity and Electrodynamics"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PLD9DDFBDC338226CA
cd ..
mkdir "04 General Relativity"
cd "04 General Relativity"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PLpGHT1n4-mAvcXwzOIz3dHnGZaQP1LEib
cd ..
mkdir "05 Cosmology"
cd "05 Cosmology"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PLpGHT1n4-mAuVGJ2E1uF9GSwLsx7p1xtm
cd ..
mkdir "06 Statistical Mechanics"
cd "06 Statistical Mechanics"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PLpi18tMShZSAQFNTb8Ji7EgCFP9lXbkOe
cd ..
mkdir "07 Advanced Quantum Mechanics"
cd "07 Advanced Quantum Mechanics"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PLpGHT1n4-mAsmMxmSX0LCaXIXT2PmU85m
cd ..
mkdir "08 Higgs Boson"
cd "08 Higgs Boson"
youtube-dl -f "best[height<=480]" JqNg819PiZY
cd ..
mkdir "09 Quantum Entanglement"
cd "09 Quantum Entanglement"
youtube-dl -f "best[height<=480]"

http://youtube.com/view_play_list?p=A27CEA1B8B27EB67
cd ..
mkdir "10 Relativity"
cd "10 Relativity"
youtube-dl -f "best[height<=480]"

http://youtube.com/view_play_list?p=5F9D6DB4231291BE
cd ..
mkdir "11 Particle Physics 1 Basic Concepts"
cd "11 Particle Physics 1 Basic Concepts"
youtube-dl -f "best[height<=480]" https://www.youtube.com/view_play_list?p=768E1383EA79C603
cd ..
mkdir "12 Particle Physics 2 Standard Model"
cd "12 Particle Physics 2 Standard Model"
youtube-dl -f "best[height<=480]" https://www.youtube.com/view_play_list?p=8BCB4981DD1A0108
cd ..
mkdir "13 Particle Physics 3 Supersymmetry and Grand Unification"
cd "13 Particle Physics 3 Supersymmetry and Grand Unification"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PLpi18tMShZSBKLugjxRsN8U5MmILu1nBo
cd ..
mkdir "14 String Theory"
cd "14 String Theory"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?p=A2FDCCBC7956448F
cd ..
mkdir "15 Cosmology and Black Holes"
cd "15 Cosmology and Black Holes"
youtube-dl -f "best[height<=480]" https://www.youtube.com/playlist?list=PL3E633552E58EB230
cd ..