How to Use the Singular "They"

If English is your second language, be careful with the singular they. The rules can be confusing. But if you're a native speaker of English, you should have no problem if you just proofread like you ought. For, you've been using the singular they in speech all your life. Therefore, you don't need to remember the rules, because they're instinctual to you by now.Nonetheless, here are the rules ;-)