Why do clouds behave the way they do?

Off of this question, as well as my own observations traveling about during the day. Going on the notion of no intelligent design maybe someone can point out why these attributes of clouds are. If I am not mistaken, clouds are formed from water vapor. OK, so what condition makes this water vapor lighter than air? When all these zillions of water vapors congregate in a given area what keeps them together to form a cloud? If I should pass through a cloud, logically I should come out of the other side wet, or will I, if I don’t, why not? What makes these minute vapors visible for me to even see the cloud in the first place? Going on clouds are water vapor, why would there be clouds other than the coast or large lakes where a great body of water is. What decides how high a cloud forms? Should not all clouds form the same way all the time? If they do not, what is the scientific significance of having clouds that do not rain? When a cloud dissolves, the water vapor doesn’t disappear, where does it go, and why did it if the reason for it going airborne in the first place was to form a cloud? So, science guys, and gals, what is up with the clouds?