how to update from El Capitan 10.1.11 to Sierra
how to update from El Capitan 10.1.11 to Sierra
how to update from El Capitan 10.1.11 to Sierra
Sierra is still available. How to upgrade to macOS Sierra - Apple Support
As Limnos mentioned High Sierra is still available too, you can upgrade to both of these
regardless if your Mac can upgrade to Mojave.
As you did not bother to tell us which Mac model and year you have it is harder to advise you appropriately.
Check with the compatibility table in the first section of each How to.....
some Macs can only go as far as El Capitan. 10.11.6.
The criteria for upgrading to Mojave is even more limited, you can have a look here,
How to upgrade to macOS Mojave - Apple Support
Whichever OS you decide on make sure third party apps you use have updates available so they will continue to work.
And also check with the manufacturers of any printers/ scanners etc for updated drivers and software so they too will continue to function in your chosen OS.
I don't think you can, only High Sierra, and only then if your computer won't run Mojave.
Sierra is still available. How to upgrade to macOS Sierra - Apple Support
As Limnos mentioned High Sierra is still available too, you can upgrade to both of these
regardless if your Mac can upgrade to Mojave.
As you did not bother to tell us which Mac model and year you have it is harder to advise you appropriately.
Check with the compatibility table in the first section of each How to.....
some Macs can only go as far as El Capitan. 10.11.6.
The criteria for upgrading to Mojave is even more limited, you can have a look here,
How to upgrade to macOS Mojave - Apple Support
Whichever OS you decide on make sure third party apps you use have updates available so they will continue to work.
And also check with the manufacturers of any printers/ scanners etc for updated drivers and software so they too will continue to function in your chosen OS.
how to update from El Capitan 10.1.11 to Sierra