This guide is for everyone who never speedran before.

The first thing you need is an app that can record your screen, as a video, preferable a YouTube video, is needed so I can verify your run. I would recommend OBS Studio, as it is free and easy to use. If you want to install OBS Studio either head to https://obsproject.com/ or you can even get it via Steam https://store.steampowered.com/app/1905180/OBS_Studio/

If you want to learn how to use OBS Studio, here is a beginners guide:

The second thing you need is a program called Livesplit. It will act as your speedrun timer. If you want to install it, head to https://livesplit.org/

Also follow this tutorial on how to set up and customize everything:

Now you can enjoy speedrunning, have fun :)