Financial Managers Society has a good resource on CD-ROM,
Financial Institutions Internal Audit Desk Reference, 2nd ed. You can see details on their website:
https://www.fmsinc.org/cms/?pid=1468. They also offer seminars and webinars.
Check out the Institute of Internal Auditors and join the local chapter for your area. www. theiia.org. They have some free resources on the website and others for sale. The Audit Charters are helpful. The IIA has a special membership section for auditors in the financial services industry with dedicated newsletter and annual conference, which are both helpful.