For bioinformatics, generally, see BioStars.
For sequencing information, see SEQanswers.
For (lots!) more tutorials from the GED lab, see the ANGUS resource. You might also be interested in the khmer protocols for mRNAseq and metagenome assembly.
For more general computational science help, see Software Carpentry, especially the Software Carpentry lessons. It contains a large number of open and reusable tutorials on the shell, programming, version control, etc.
Blue Collar Bioinformatics
Getting Genetics Done