learn the rule: to / too
- to is a preposition, indicating direction or attachment to something
- Your sock is next to the potato.
- Who did you give your potato to?
- Where's he to? (Westcountry usage only.)
- too is an adverb, generally used as a sub-modifier
- Are they doing it too?
- You're too ugly.
- The two are not interchangeable.
- Getting it wrong makes you look stupid. And ugly.