Is the letter I always capitalized?

You always have to capitalize 'i' when it is alone or referring to 'myself' or 'me'. You also have to capitalize 'i' when it is at the beginning of the sentence.

EX:

1: He didn't see that I gave it to her.

2: I told them not to say anything.

3: I took the shirt back to the store because it didn't fit me.

4: The dog came when I called him.

I hope this helped!

-EB