Exercism…  

I just want to take a moment to plug exercism.io - anyone who is looking to get help learning a programming language or extending their current knowledge should use this site as a resource. They provide ‘practice problems’ you can work through to hone your skills.

 
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Kudos

Now read this

Let’s Encrypt - certbot-auto

Let’s Encrypt is a free certificate authority that you can use to generate certificates to use SSL on all of your websites! These certificates are short-lived however (90 days), so a bit of automation is required for it to be useful.... Continue →