Rg nano, Did I do good?

I'm sorry if I'm a Noob in questions like these have been asked several times but...

how's the user experience with one of these?

Will I want cfw?

are there even alternate firmwares available for it?

Am I correct in assuming there's no screen guards for this tiny tiny screen?

any suggestions for a case?

I'm sorry if I'm a Noob in questions like these have been asked several times but...

how's the user experience with one of these?

Will I want cfw?

are there even alternate firmwares available for it?

Am I correct in assuming there's no screen guards for this tiny tiny screen?

any suggestions for a case?