Believe me - I´m beginner in Linux and commnd line too. I forgot almost everything from my DOS times, many years ago. :-)

So let´s start with LuCi interface and plain FAT32 formated flashdisk. Insert disk and go (in LuCi) to System-Mount Points. You can see your disk in Mounted File Systems as "dev/sda1" or something. Now you must add Mount point (command "Add"): check "Enable", choose system by UUUI and define mount point (/mnt/flash or /mnt/myflash...) and finally "Save and Aply". Remember choosen mount point (e.g. /mnt/myflash1)!

Now you can create share in Samba. Go to Services-Network Shares. I´d recommand to change your hostname to more familiar (e.g. "turris" or "omnia"). Save and Apply. Add new share. Name it as you will (e.g. USB1 or "sharedflash"). Add your mount point (/mnt/myflash1). Check Allow Guests and maybe Read Only (if you can). Save and Apply. Voila! Now you can see in network new device (in my case "turris") and share (e.g. USB1) with the whole content of flash memory.

O. K. That´s only simple beginning. Primitive. But it works. :-)

NTFS is a bit more complex, but no rocket science. Hence NAS in czech language tips.

Michal