The most important advice for newbie is about security. Be careful because there are a lot of phishing attempts. Secure your coins in wallets and be extra careful with your passwords and private keys.
And remember to do your own research when deciding in what to invest.
As a newbie, I have a little advice for you to be carefull so that you will not put into danger. You must secure you private key just creating flash drive so that you will not experience hacking to your password.