upgrade from 10.6 to Latest OS. Should I have to pay for the versions in between? Don't have an issue with that, Just how to do it?
It depends whether your hardware is capable.
Read here: Upgrade to OS X El Capitan - Apple Support
upgrade from 10.6 to Latest OS. Should I have to pay for the versions in between?
No, if your Mac meets the requirements for El Capitan, you can upgrade in one step from Snow Leopard.
It would be prudent to make a full backup of your system before upgrading.
Check to make sure your applications are compatible. PowerPC applications are no longer supported after 10.6.
Applications Compatibility (2)
El Capitan 10.11 Compatibility information
Do a backup before installing, preferable 2 backups on 2 different drives.
upgrade from 10.6 to Latest OS.
