Setup
After you follow the other guides and create the image boot up and resize the partition. Make sure to run pacman -Syu to uprade everything.
Install Sudo
pacman -S sudo
#To give your regular user permission to use sudo, you need to edit the configuration file using visudo:
EDITOR=nano visudo
#Locate the section marked as:
##
## User privilege specification
##
#and uncomment the line below to say
%wheel ALL=(ALL) ALL
#Save and exit.Wifi
Nothing beats the Arch Linux Wiki its packed with useful information about how to configure everything. For wifi i used Netcfg
Ruby
# To install ruby run
pacman -S ruby
# add this to your PATH variable
PATH="`ruby -e 'print Gem.user_dir'`/bin:$PATH"
# for bundle to work correctly
export GEM_HOME=$(ruby -e 'print Gem.user_dir')