Hi Tricia. Most modern songs are 4/4 time Ie 1234, 1234, 1234, 1234. the accent is always on the first beat ONE two three four, ONE two three four,
Example: Well she was just seventeen. and you know what I mean.

Whereas 3/4 time is 123, 123, 123, 123 as in a waltz. The accent is still always on the first beat ONE two three ONE two three.
Example: Pat a cake pat a cake bakers man.

These are very basic time sigs it does get more complicated and even more difficult when some songs change time sigs midway but that is another lesson.