FinalCrypt is a very useful, free tool for encrypting and decrypting selected files. Using the program is extremely easy. The whole thing resembles a bit of a file manager, but it's just appearances.

In the left part of the main FinalCrypt window choose the files that you want to encrypt or decrypt, and in the right part you need to place an encryption file. Only after such preparation of the tool can we press the "encrypt" button to start the data protection operation. FinalCrypt also includes an additional tab with an event log, where information on operations is presented.