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FreeNAS
Guides to follow
Overall Guide
FreeNAS is one of those things where people aren't being jerks when they tell you to RTFM. The documentation is highly detailed, and lists almost everything you'll need to get up and running, or reference in need of a fix.
SMB Share Setup
On top of the SMB setup, what a lot of users have found useful is this pair of guides from a user on the FreeNAS forums. This guide goes over basic setup, and also advances changes you can make when you introduce multiple groups or members into the mix.
Hard Drive Burn-In
When you buy your new hard drives to put into a ZFS array, you'll want to check the drives first for any defects before writing a metric ton of data to it. Here's a great writeup on how to accomplish this inside of FreeNAS
Replacing bad drives
Use smartctl -a /dev/(name of disk drive) to list the SMART attributes for the drive in question. Use smartctl -t short /dev/(name of disk drive) to do a basic test.
https://forums.freenas.org/index.php?resources/replacing-a-failed-failing-disk.75 https://www.thomas-krenn.com/en/wiki/Analyzing_a_Faulty_Hard_Disk_using_Smartctl
After new drive is installed, before resilvering the drive, break in the drive with the following:
smartctl -t short smartctl -t conveyance smartctl -t long badblocks -b 4096 -ws smartctl -t long
This will put the drive through its paces and if it survives, it should be in great shape for use. If it fails, RMA the drive if it is under warranty.
https://www.ixsystems.com/community/resources/hard-drive-burn-in-testing.92/
https://www.reddit.com/r/freenas/comments/928p15/migrate_pool_to_new_disks/
Other tips outside the guides
SMB Shares and Microsoft Accounts
Fixing Permissions Issues
Revolves around using setfacl