- Khan Academy (Biology, Chemistry, Statistics, Probability)
- Molecular and Cell Biology for Dummies <-- includes overview of lab techniques like PCR and electrophoresis
- Bioinformatics for Dummies
- R Cookbook
- Molecular Biology of the Cell <-- expensive textbook, very detailed
For example http://www.ncbi.nlm.nih.gov/books/NBK20260/ or http://www.ncbi.nlm.nih.gov/education/ or just http://www.ncbi.nlm.nih.gov/
I would suggest trying to learn biology or chemistry like anyone going for a degree in either or both. Look into what books and other publications they read. Or just go back to school and add a squishy degree to your CS degree. Or do the equivalent of that on your own.
I would say that is way better than Bioinformatics for Dummies.
http://www.ncbi.nlm.nih.gov/ - sequences, papers, and so much more
http://smd.stanford.edu/ - microarray data
http://archive.ics.uci.edu/ml/ - not biology related but good data sets to play with R