Do you compliment your friend on his new haircut, or complement him? Did that movie have an affect on you, or an effect? Did you walk fewer steps or less steps than you did yesterday?

The English language is full of confusing spelling and grammar rules. It doesn’t matter if you’re still a student or writing professionally for your job: From time to time, we all need a little reminder for how to spell a difficult word or whether it’s okay to start a sentence with “and.”

That’s why the folks over at urbanest created the cheat sheet below. It covers a variety of useful grammar and spelling rules in the English language, including punctuation tips, commonly misspelled words, and even the grammar rules that can and should (gasp!) be broken. This is one you’ll want to bookmark for future reference.

(And if you want to study up on grammar even more, read this blog post to learn 25 of the most common grammatical errors we all need to stop making.)