As you probably know, the File Services team provides a Best Practices Analyzer tool (BPA). It includes several rules for the configuration, operation, performance and security of the SMB, NFS, DFS-N, DFS-R and FSRM.
I was recently looking at the pageview statistics for each of the rules for the SMB component and found how how the rules rank in terms of popularity. Here's that list (from most popular to least popular), with the links to TechNet documentation:
Download the File Services BPA directly from Windows Update or from the Download Center at http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=8f25a157-16f0-47c1-869e-28ce00e6dd71