There really isn't many concepts to get. `zpool` is like the device manager, use it define how your disks are grouped i.e. turn two disks into a mirror or striped array. `zfs` creates, sets properties on and manages the datasets on the zpool.
I reccomend you just play around with it a bit first (you can just use some 1Gb test files instead of actual disks), its really just a lack of familiarity that scares people away.
For Linux specifically I also reccomend https://docs.zfsbootmenu.org/en/v3.1.x/.
ZFSBootmenu is a bootloader that is fully able to take advantage of all the ZFS features and it also has great documentation with installation guides for a range of distros. https://docs.zfsbootmenu.org/en/v3.1.x/guides/fedora/uefi.ht...
I reccomend you just play around with it a bit first (you can just use some 1Gb test files instead of actual disks), its really just a lack of familiarity that scares people away.