These sharing features are pretty self-explanatory; they allow you to share a printer and scanner on your local network to other computers. After you have enabled both of these sharing features, you will be able to select the printers and/or scanners that you would like to share on your local network. 
After selecting the printers, they will instantly be shared across the network; however, you will still need to set them up on the computers you’d like to access the printers with. On another Mac, navigate to System Preferences > Print & Fax. Once there, click the plus sign (+) under the printer listing. In the Default tab, you should see any shared printers you selected. Click the printer you wish to add, then click the “Add” button. After you do this, the printer will be available to print from any application throughout OS X.
Mac OS X includes a full Apache web server that can be enabled by checking the “On” checkbox for Web Sharing. This web sharing service will allow you to serve up HTML web pages right from your Mac. These pages can then be viewable on your local network, or you can step it up a bit to make it accessible over the Internet. 
Copy down the personal website address listed in the Web Sharing preferences. This is the address that you can visit on your local network to load the web pages stored on your Mac.
Web pages are stored in the Sites folder inside of your Home directory. This is the location that will automatically be read when you go to the personal website address. By default, Apple has an example page here called "index.html," which is the default page loaded by Apache.
Remote Login allows you to enable something known as SSH (Secure Shell). This service will allow you to login to your Mac remotely through the Terminal and issue commands to your Mac. As a bonus, this service will also allow you to access your files remotely through any FTP client using a protocol called SFTP (Secure File Transfer Protocol).
Because this is a topic that we’ve covered in the past, you can read our previous post to learn how to set up and use SSH and SFTP on your Mac.
Remote Management, when enabled, allows your Mac to be remotely viewed and/or controlled with Apple’s specially-designed Remote Desktop application. This application is mostly used in large corporate settings as a way to push applications and updates out to a large number of Macs. If you don’t use Apple Remote Desktop, there is really no need to have this enabled as you can get many of the same features using the “Screen Sharing” feature of the Sharing preferences.
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