Bioinformatics Resources
Biostars - Excellent community forum for all things bioinformatics
Biocondutor - Open source R based tools and packages for genomic analyses
SEQanswers - Next Generation Sequencing based community forum
Programming Resources
stackoverflow - Best resource for error debugging! If you run into an error, most likely someone has already posted it and was solved :)
R bloggers - Great tips and tutorials on all things R
R Reference Card - A oldie but goodie for quick reference to most commonly used R commands by category
Explainshell - Command line decorder to help understand syntax
Command Line - List of command line tricks
oh my git - Open source game about learning git
regex101 - App to build, test and debug regular expressions
RegEXR - Another regex based app to understand and test regular expressions