https://github.com/Atmosphere-NX/Atmosphere/releases
If your firmware version is 9.1.0 search for that on that page, and be amazed of your findings. (Support was added for 9.1.0).
(Unpatchable unit means, that pretty much all firmwares will be hackable/reversable eventually, it usually takes a few weeks time after every new release though.)
In regards to honestly, trust and handholding. And newest and best. How many of us do you think have hacked the switch a week ago and can point you to newest and many trusties?
Get a dongle from aliexpress, find a guide that walks you through installing atmosphere as well as emuMMC. Before you start, put 90DNS into your switch network settings to block all access to Nintendo. (Never take that out of your network settings in emuMMC.or ban. Only use emuMMC for homebrew stuff, or ban.)
Check if its working (and you cant access f.e. the eShop or game updates), before you start modding also. (Otherwise, ban.)
Understand the concepts (what piece of software does what), before following a tutorial., ideally.
Get a Samsung Evo Plus 128 GB or higher (microsd) if you can afford it, also get a separate 32 GB microsdcard just for your nand backup (otherwise chances are you wont do it) (first thing you do, after successfully booting into Hekate).
Now get out of this forum, and lament in the tutorial section instead.
(You brought nothing to the table (not even cared to list version numbers (newest)), conjured up false alternatives (hackable or banned?), wanted whats best support and handholding in the wrong forum. (I have not visited the Tutorials subforum for maybe half a year and cant recommend/refer a priest to attend to your needs for trustTM either..

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Alternatively, you can look into switchroot (Android for switch) only.
Setup will be easy (if you are fine with switching to another sdcard every time you want to use it), bann risk is zero.
(Its like booting a different OS on your switch. Nintendo can/will only ban you if you modify their OS (== do any homebrew stuff on their OS outside of emuMMC (emunand) (which will also run their OS), and go online after.))
edit: And if you are not resorting to switchroot only, format your 32GB sdcard to exfat (thats the one for your nand backup), and the bigger one to fat32 (on windows you have to use a separate tool (f.e.:
http://www.ridgecrop.demon.co.uk/index.htm?guiformat.htm ) for that (on bigger sdcards), otherwise you'll run into issues later down the road.)
With switchroot you will clone an image onto your sdcard, so stuff like this gets addressed by that and you dont need to address it yourself.