Ubuntu Core's wiki page page contains the instructions to install Ubuntu Core on a target media:
Uncompress (do not unpack) rootfs
Format target media: at least one partition should be ext2, ext3, or ext4
Unpack Ubuntu Core to ext{2,3,4} partition
Install boot-loader
Install Linux
If the Linux kernel requires modules, add these to /lib/modules/$(uname -r) in the ext{2,3,4} file system
Boot the target device
Install any additional required software using apt-get
But what are the specific commands to do the above? The things I'm specifically confused about are:
Uncompressing and unpacking, what's the difference and how do I do them?
What package should I install if I want the generic kernel provided in regular Ubuntu installation?
I won't be installing any drivers or anything related to kernel other than what's provided in the repos, do I need to worry about manually adding kernel modules?
PS I would like to request that all the commands used in the installation process be mentioned in the answer, for the benefit of ones who're completely unfamiliar and myself, should I ever forget.