Think about what you should or shouldn't be posting and make sure you double check before posting your content.
Don't give anyone that you don't know or only know online your address and the address of your place of education or work.
If you agree to meet someone that you only know online, be sure to not go on your own and always tell someone where you plan on going too.
Never give your email address or any passwords to someone you don't know.
Make sure your social media privacy settings are set as high as they can possibly be.
Try your very best to visit secure websites, a secure website's address or URL will start with https (S - Stands for secure).