Arch on an Acer One A110

I've been thinking about Arch for a long time, and since I have an old Acer One lying about, I thought it was about time to test it.

So far I've read a bit on the page on the specific topic:
https://wiki.archlinux.org/index.php/Acer_Aspire_One#Preparation_prior_to_installing_Arch_Linux

Downloaded the image:
https://wiki.archlinux.org/index.php/Installation_Guide#Download

Wrote it to a stick: dd bs=4M if=/path/to/archlinux.iso of=/dev/sdx && sync (from here: https://wiki.archlinux.org/index.php/Install_from_USB_stick)

And booted it up: https://wiki.archlinux.org/index.php/Acer_Aspire_One#Preparation_prior_to_installing_Arch_Linux

But that's only the start. I need to buy a new card to contiue with these steps:

1. format the SSD as ext3


2. format the card as ext4


3. basically do the setup stuff: https://wiki.archlinux.org/index.php/Installation_Guide#Download