Create new users

Hi ,
i would like to create a new user over unix ,which are these commands to used and which are the directories to handler?
Thank you

To add a user:
# useradd <username>

To add a password for that user:
# passwd <username>

/etc/passwd gives you a list of all users.

useradd -u userid -g groupid -d /export/home/amit -m -s /bin/ksh -c "user account for amit" amit

-u for userid
-g for groupid
-d home dir
-c for comment
-s for default shell

at last the username

Hi
thank you very much , i need to create a user only for FTP , i cant access to telnet
Thank you