Post by Pedro and Leonardo. For those who never understood how Principal Component Analysis works… Start here. Other useful links: here here here and here. Image credit.
Suggested by Pedro and Helder. The codeacademy course for starters in command line. Check here. Also check here (nice cheat sheet): Become a Command Line Ninja With These Time-Saving Shortcuts Image credit
Suggested by Pedro. “Course Description This course is offered to undergraduates and is an elementary discrete mathematics course oriented towards applications in computer science and engineering. Topics covered include: formal logic notation, induction,
Suggested by Matheus, Pedro and Leonardo. Here are some important cheat sheets. For statistical tests: click here. For R-based Software: click here. For Big-O complexities of common algorithms used in Computer Science: click
Suggested by Pedro Russo. “Visual learning to help student pass statistics class. Channel includes video lessons on regression, z scores, t statistics, Analysis of Variance (ANOVA), Chi Square, SPSS, Excel and most topics taught