I don't want to write a post about that. I think it's been done 10000 times already much like the "How to be successful on Steemit" post has been done about 10000 times(probably more).

Every incoming upvote you get raises your reputation. If you do something stupid and get a downvote, that lowers your reputation. A low value account vote won't raise your reputation as much with one vote as a higher value account.

Reputation is just a number though and it doesn't really mean much now since people can just buy high value votes to raise the number.