good links:

• complexity:
  • http://stackoverflow.com/questions/7294634/what-are-the-time-complexities-of-various-data-structures
  • https://wiki.python.org/moin/TimeComplexity
• language:
  • http://stackoverflow.com/questions/743164/emulate-a-do-while-loop-in-python
  • http://stackoverflow.com/questions/7931309/shuffle-in-python
  • https://docs.python.org/3/
• concurrency:
  • http://www.slideshare.net/dabeaz/an-introduction-to-python-concurrency