Books and Resources
Everybody working with mice in research should know The Jackson Laboratory webpage. A plethora of information!
MGI is the international database resource for the laboratory mouse, providing integrated genetic, genomic, and biological data to facilitate the study of human health and disease. You should know the MGI-ID of your gene of interest.
A really good book about Mouse Genetics is from Lee Silver (1995). Thanks to JAX-MGI, the book is available online at: http://www.informatics.jax.org/silverbook/
A lot of information about CRISPR can be found on "The CRISPR web page" at the CNB-SCIC in Madrid.