There are many excellent resources on the Web; the following links provide background and useful information:
ITP Program on Bioinformatics
A course by Prof. Goldenfeld on Statistical Physics of Biological Information and Complexity
A course at Berkeley on Molecular Biophysics
There are also several online biology resources that might be useful:
MIT Biology Hypertextbook
Kimball's Biology Pages
Molecular Biology Contents
Beginner's Guide to Molecular Biology
An On-Line Biology Book