Just like on windows you have multiple user accounts. Unlike windows, you have accounts you may never log into that handle certain programs not fit to running in your account for security and other reasons.
Linux always has the root account which compares to the Administrator user account in windows and is alternatively called the Super User account. Idealy you want to run in a limited privileges account unlike some do in windows because in windows many important programs require admin level access. In Linux the only time you really need elevated user privileges is while installing software for all users and changing system wide settings.
Yes.
By default,there is only one account, root. However, most Linux distribution will either allow or make you set up a second administrative user account.
You can't recover passwords in Linux; you can only reset the passwords on various accounts.
Yes, as long as they have user accounts on both machines.
For the most part, every Unix-based and Unix-like (and by extension, Linux) distribution will have a root account (equivalent to a system administrator account in Windows). The remaining accounts will be allocated for the users and for certain applications.
If you are referring to Sage Line 50, it can be installed and run using Wine.
Yes Linux does support the creation of multiple user accounts. If you wish to learn to use the command line, these commands are how you create a new account along with a password. 1) useradd "new account name" 2) passwd "name of new account" you will be prompted for a password then asked to retype it. to delete a user type: userdel "name of account" to delete the account and all the accounts files type: userdel -r "name of account" All of the commands I've listed must be run by the root account.
Linux Internals is a book about how Linux works.
Linux World is the Linux Development & Training Center
The courses available for Linux include Linux server, Linux desktop, bash shell, and many others.
"useradd" command and sometimes adduser command. Please refer to the manual page of the command by issuing "man useradd" for detailed information
useradd <username> <other-options> For detailed information, please refer the man (manual) pages ex: man useradd