How To Block a Website ?
Step 1: First open C:WindowsSystem32driversetc from your window explorer, If Windows is not installed on C:, substitute the appropriate drive letter.
Step 2: Now Open hosts file using Notepad.
Now start typing in the end after # ::1 localhost in new line.
Step 3: Type 127.0.0.1, then a space once, and then type the address of a website you want to block. For example, to block Facebook.com, type127.0.0.1 www.facebook.com on this line.
Step 4: If you have more website to block, then keep entering in the same format. Check the below Figure.
Step 5: Now save your File and if it ask for Administrator Privilege . using any Web Browser
Step 6: Now test it any Web Browser.
Its to easy to block a website and without any tool. If you still have any doubts ask it in comments