- List vs array
- Vectorization
- Broadcasting
- Contiguous Memory
- dtype
- shape and dimensions
- aggregation functions
- broadcast
- Linear algebrea
- eigenvectors. and Eigenvalues ( not imp)
- fansy and boolean indexing
- random number generation
- seed reproducibility
- Mode
- Measure of dispersion
- Histograms
- Memory management
- SVD ( not imp)
- profiling
- QR decomposition ( not imp)