This questions strikes me as one that may well have good answers elsewhere. I am willing to delete this post in that case - just let me know. I did not find one on initial searches.
Normally, when I have been asked how to get into bioinformatics, it is by people who already know biology or medicine fairly well, but who want to learn the CS / mathematics side. In this case, I have a new contact that wants to learn the biology / medicine side but already has a background in both CS and mathematics.
The specific context is that he works in a clinical sequencing lab, but he does not always understand the biological side of discussions that occur during meetings he attends (that will result in work for him). As such, mostly what he needs to understand is genomics, variant callers, cancer biology, Next Gen artifacts, types of genetic variation, etc. I am looking for suggestions on targeted resources in this area.