PuTTYgen is an app created by Simon Tatham for Windows and UNIX systems that allow users to generate, manage, and convert Secure Shell (SSH) keys. PuTTYgen also provides a graphical user interface for key generation and manipulation. PuTTYgen can be used to create both private and public keys, and it is an essential tool for anyone looking to securely connect to a remote server. In this article, we’ll provide tips for getting the best experience out of PuTTYgen. 

1. Choose the Appropriate Key Length – PuTTYgen allows users to generate keys of various lengths, ranging from 512 bits to 16384 bits. It’s important to choose a key length that provides the appropriate level of security for your needs. Generally, longer keys are more secure, but they also require more processing power to generate and use. 
2. Use the “Random Art” Feature – PuTTYgen has a “random art” feature that creates a unique image for each key. This feature helps to visually identify the key and provides an additional layer of security. 
3. Back-Up Your Keys – It’s important to back up your PuTTYgen keys. This ensures that, in the event of a computer crash or other data loss, you will still have access to your keys. The best way to do this is to export the keys to a secure external drive or cloud storage service. 
4. Don’t Share Your Private Key – Your PuTTYgen private key should never be shared with anyone. This key should remain secret and should only be used to authenticate yourself when connecting to a remote server. 
5. Change Your Passphrase Regularly – PuTTYgen allows users to set a passphrase for their keys. This passphrase provides additional protection for your keys and should be changed periodically. 

By following these tips, you’ll be able to get the most out of your PuTTYgen experience and ensure that your keys stay secure.