Just remember that "we're" is a contraction (the apostrophe is a giveaway), while "where" is a location, "were" is the past of "to be" (in some cases), and "wear" covers everything else (sometimes literally).
What is the difference between were and where?
"Were" (rhymes with "fur") is a past form of the verb "to be." "We're" (rhymes with "fear") is a contraction of "we are." The adverb and conjunction "where" (rhymes with "hair") refers to a place.
Where is vs Ware?
The commonly confused words "ware," "wear," and "where" are homophones, although some people pronounce "where" with a slight puff of air at the beginning. The three are different parts of speech—noun, verb, and adverb, respectively—and have three very different meanings.