I really wish I could recommend Libreoffice but I have mixed experiences with it. Spreadsheet is really good, I can only praise it. Writer is fine for basic documents but I gave up updating my CV with it - too frustrating. Impress is so far from PowerPoint that I recommend finding an alternative.

I felt completely lost. What is Terraform?

Terraform is a tool that codifies cloud APIs into declarative configuration files to automate infrastructure provisioning and management

Not exactly sure what that means, but that may help someone!