Data Science / Machine Learning

Natural Language Processing:

Gensim is a NLP framework for Python: https://radimrehurek.com/gensim/index.html
NLTK is another toolkit for NLP, also for Python: http://www.nltk.org/
NLTK book: http://www.nltk.org/book/

Podcasts / courses

Academy targeted torwards DS - podcasts https://www.superdatascience.com/
Lectures on NLP: https://www.youtube.com/playlist?list=PL96JpGPc-cbBkZ5Kq_7Tq0jbZegKIBEjI

Data analysis

Python frameworks:

Pandas, it's like R but in Python : http://pandas.pydata.org/

Data science

Kaggle- data science framework: https://www.kaggle.com/

Machine learning

Machine learning mastery - courses: http://machinelearningmastery.com/
Machine learning mastery - blog: http://machinelearningmastery.com/blog/

Algorithms

Jelani Nelson publications: http://people.seas.harvard.edu/~minilek/publications/