sudo apt-get update
sudo apt-get install samba samba-common-bin
Configure the software
sudo nano /etc/samba/smb.conf
Scroll to bottom of file, add the following
[USBDrive]
comment=USB Drive Share
path=/mnt/usbdrive
browseable=Yes
writeable=Yes
only guest=no
create mask=0777
directory mask=0777
public=yes
[Images]
comment=Images
path=/var/www/html/images
browseable=Yes
writeable=Yes
only guest=no
create mask=0777
directory mask=0777
public=yes