hi,
(The root password for the live CD is “live”. Standard user login is “one” with password: "one")
For installation and for all work required administration privileges the super user "one" with password "one" is used.
click on slackel-live-installer on Desktop and type as password "one" without quotes. This is the password for superuser one.
Next create your partitions from gparted, set filesystems, root password, user name and password etc
Read the release announcement. There are there also videos for installation in uefi (64bit) or on 64bit without uefi or installation in 32bit.