[Koha] Koha upgrade from 3.20.00.000 (2015) to any latest and stable version

[Sultan Qaboos Cultural Center Library]

Hello,

Our library is planning to upgrade Koha from the version 3.20.00.000 to any
Koha latest and stable version.

- What Koha version do you recommend us ?

- Could you please give us a complete tutorial, system requirements, and
the things we have to do (backup ?, etc,) before starting the upgrade ?

- Is it possible to upgrade directly from 3.20 (2015) to the latest version
? or we have to upgrade to lower versions before?

Given that almost all Koha modules are up-to-date.

Best regards,
Walid

-- 
*Sultan Qaboos Cultural Center Library*
1100 16th St, NW
Washington, DC 20036
library at sqcc.org
202-677-3967, x104