Download

Format

For Linux you can use the following:

   lsblk 
   dd bs=4M if=image.img of=/dev/sdX conv=fsync

First command is used to identify the appropriate output filesystem

Backup

Again, use Win32DI on Windows or the following on Linux

   sudo dd bs=4M if=/dev/sdb of=raspbian.img

And to restore on Linux

   sudo dd bs=4M if=raspbian.img of=/dev/sdb

WiFi Setup

The easiest method is to use the raspi-config script included in Raspbian

   sudo raspi-config

Alternative

We can modify the wpa-supplicant file to include our networks.

   sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

With Password

Add the following to the above config file:

network={
    ssid="testing"
    psk="testingPassword"
}

You can also use wpa_passphrase to generate an encrypted PSK:

   wpa_passphrase "SSID"

You can then use the output without quotes in the above PSK slot in the config file

Without Password

network={
    ssid="testing"
    key_mgmt=NONE
}

Multiple Networks

Simply add both networks to the wpa_supplicant config file, however if you need to prioritize one over the other, use the priority flag:

network={
    ssid="HomeOneSSID"
    psk="passwordOne"
    priority=1
    id_str="homeOne"
}

network={
    ssid="HomeTwoSSID"
    psk="passwordTwo"
    priority=2
    id_str="homeTwo"
}

Config.txt

Under /boot/config.txt a couple of key configs to remember:

For the HDMI port on a media center you do typically want it on all the time, even if the TV is off:

   hdmi_force_hotplug=1
   hdmi_group=1
   hdmi_mode=16
   hdmi_drive=2

References