The main thing you need to know about the internet is how to get and keep a secure password. This is one of, if not the, most important thing to know.
The first thing you need to know about is the statistics. In 2015, 2 in 5 people had their password stolen, got hacked, and or had their information compromised. Now 8 in 10 people are worried about online security and 7 in 10 people no longer trust passwords for security(statistics found on Entrepreneur.com).
Some of the most recent news surrounding passwords you may have heard about, it was the recent scuffle between Russian Hackers and the Democratic Party. The scuffle was nothing but politicians shouting at each other but it was different in the cloud. The hackers, if they got anything weren't putting the info on websites with lots of traffic so it turned into an online scavenger hunt.
It's important to have a strong password because, statistics done by CNN show that in 2015 the personal information of about 110 million people were leaked to hackers
If you have a password that you want to see if it is secure go to https://howsecureismypassword.net/ and enter your password.
If you need to make a new password, then try going for a phrase. once you have that tghen go in and add upper cases and symbols.