InitialConfigCentos.sh

# login to your droplet 
ssh root@<ip-address>

# change root password
passwd

# create new user
adduser -c "New User Description" -m <user>

# set new user password
passwd <user>

# set new user root priviligies
visudo

# look for root priviligies ( root	ALL=(ALL)	ALL) and write
<user>	ALL=(ALL)	ALL

# save and close
ESC + ZZ

# change ssh port
vi /etc/ssh/sshd_config 

# Set the next parameters
Port <port-number>
Protocol 2
PermitRootLogin no
UseDNS no
AllowUsers <user>

# save and close
ESC :qw

# reload ssh
/etc/init.d/sshd reload

# test your new ssh connection
ssh -p <port> <user>@<ip-addres>