The official website https://www.pubg.com/
has a lot of content to offer. It can literarily offer all the information you need to start playing and get better. BUT it offers no night / dark mode. For the serious gamer this is a deadly sin, but fear no more mortals - Night Eye is here to save your eyes from the burning bright screen.
Here is the preview of how https://www.pubg.com/
looks before and after Night Eye.