Overclock Rspberry Pi with raspi-config

To overclock your Raspberry Pi, enter the command:
$ sudo raspi-config

In the steps, use <UP/DOWN> key to select options, <Tap> to switch between options, and various actions. And <Enter> to confirm.

- Select Overclock and press <Enter>

Be aware that overclocking may reduce the lifetime of your Raspberry Pi. If overclocking at a certain level causes system instability, try a more modest overclock. Hold down shift during boot to temporarily disable overclock. 
See http://elinux.org/RPi_Overclocking for more information.

- Press <Enter> to confirm.

- Reboot.

Setup Raspberry Pi SSH server

SSH Server should be enabled in default Raspberry Pi first time boot up and installation. If not, you can enable SSH server in "Raspberry Pi Software Configuration Tool", enter the command in LXTerminal:

$ sudo raspi-config

- Select Advanced Options

- Select SSH

- Enable SSH server

- OK

- Finish

Related:
- Remote login Raspberry Pi SSH server from Linux.
- Remote login Raspberry Pi SSH server from Windows.