The word I is a proper noun because the word I is a name for yourself. Always capitalize the word I.
I will help you with that project.
Bob and I can be at your house tomorrow.
Bob says I can get a ride with him.
Always capitalize the word I because it is a proper noun.
▶It’s your turn. Notice how this sentence looks wrong. Be sure to always capitalize the word I. Mom is hungry, so i will make a sandwich for her.