Steam is a website/platform created by Valve. It is a market for buying/selling video games. In this website, I will take you trought Steam so you can hopefully best understand Steam.

1. To first install Steam you will need to go at: https://store.steampowered.com/ copy that URL or if the link won't work try this image:             

 

2. press install steam in the upper right corner

3. After steam is installed create or log in into your existing account.

4. Start enjoying steam!