So, as you all know new player guide is kinda (5 years) outdated. But if you do not know how to play the game and there is no updated guide, everyone will make fun of you and smurfs will probably make you not like the game. So, if you are looking for a nice new player guide you can visit this: http://na.leagueoflegends.com/en/featured/new-player-guide
It is basically NA version of new player guide which was recently (one year ago) updated and for some reason it is not on every server. If you speak english this guide should give you a nice headstart because most new players would not visit the NA version of the website to look for a guide.
I am playing league for more than 3 years now and when I saw this guide I was impressed with how Riot made it look. It has every single piece of information a new player should know. With nice animations, videos and voice explanations they really go in depth with explaining.
There are still some outdated parts but they are constantly updating the page.
If you just want to learn more about the game or get a nice headstart i suggest you visit and read this guide.