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.
To all newbie I have a little advice for you, if you joined the campaign, don't be careless so that you cannot damage in bitcoin. You must be care so that you are good as a newbie.