When an add pops up, DON'T CLICK ON IT! It might not be a good sight for children.
When you are on the computer and a random person chats with you DON'T respond to it!
If your computer starts to lag or slow down, give it a minute. Don't start clicking buttons to make it go faster!
When your computer starts to slow down check the battery, it might be low on juice!
Also check your internet connection!