Standalone server (not domain controller).

Check there is no user called administrator (a new Stretch RPi thing?).

grep administrator /etc/passwd

Install shit.

apt-get update
apt-get install libcups2 samba samba-common cups

(About 100mb of stuff on Raspbian.)

nano /etc/samba/smb.conf

[global]
workgroup = PEAZONE

[homes]
read only = no

Leaving unix password sync = yes might fix the ancient smbadduser headaches? Syncing passwords is still a ballache, so

smbpasswd -a pi
# enter password

service smbd restart