Select the default locale you want to use, I use en_US.UTF-8
4 Localisation Options -> I2 Change Timezone
4 Localisation Options -> I3 Change Keyboard Layout. I use Generic 104-key PC, English (US), English (US), The default for the keyboard layout, No compose key
5 Interfacing Options -> P6 Serial -> Would you like a login shell to be accessible over serial?: No, Would you like the serial port hardware to be enabled?: No
7 Advanced Options -> A1 Expand Filesystem (This should have been done at first boot)
7 Advanced Options -> A3 Memory Split -> How much memory (MB) should the GPU have? 256MB
Edit /boot/config and change (or add) the following lines:
hdmi_force_hotplug=1
hdmi_group=1
hdmi_mode=4 (720p, 60Hz)
hdmi_ignore_cec_init=1
reboot the Pi
Download and install a version of chromium with WideVine decryption support: