Mortgage lending is going to be a learning curve! You're smart to look for resources right away!
Check out the state banking associations in the states in which you do business - they'll offer seminars, etc. Kirchman offers some good basic courses, and several other vendors do as well.
Take advantage of applicable BOL webinars, ABA webinars, etc.
I'm sure others will have some more good ideas for you. Good luck in your new job!
_________________________
Opinions my own.