I compiled A collection of interview questions for buy side quants (it is still a working draft and will be updated regularly). There are also a collection of websites, online courses, articles as well as books worth reading for financial engineers and investment management professionals. I also summarize a list of good general/none-investment books. Here are some inspirational talks.
There are several sites providing online coding practice services, including LeetCode Online Judge and HackerRank, through which programmers can submit solutions to coding questions and obtain immediate feedback.
You can find a list of my favorite restaurants here.
Mr Saurabh SIngal is my career mentor and a successful investment manager, and you can find some interesting contents in his website. Victor Niederhoffer also has a big influence on the way I approach the market.
Some specific learning resources
Some other notes