About True Crypt
True Crypt is a software system for establishing and maintaining an on-the-fly-encrypted volume (data storage device). On-the-fly encryption means that data is automatically encrypted right before it is saved and decrypted right after it is loaded, without any user intervention. No data stored on an encrypted volume can be read (decrypted) without using the correct password/key file(s) or correct encryption keys. Entire file system is encrypted (e.g., file names, folder names, contents of every file, free space, meta data, etc).
How To Use True Crypt
1. First Download Truecrypt from Here
2. After downloading, Install the software and Follow the video
Hope this Information Helps You ,If you have any doubts regarding the the installation please feel free to post a comment