I'll echo what others have said, the books do a good job of standing on their own. So I don't see a major problem (aside from some general spoilers) with starting at book 3.
That said I burned through an entire years worth of audible credits getting them all (and have since firmly cemented the voice of Jim butcher as Harry in my head).
I'm not sure how fast you read, but if your lucky Ghost Stories will be out by the time you finish Changes/Side Jobs
-Terry
-----
"so listen up boy, or pornography starring your mother will be the second worst thing to happen to you today"
TF2: Spy
That said I burned through an entire years worth of audible credits getting them all (and have since firmly cemented the voice of Jim butcher as Harry in my head).
I'm not sure how fast you read, but if your lucky Ghost Stories will be out by the time you finish Changes/Side Jobs
-Terry
-----
"so listen up boy, or pornography starring your mother will be the second worst thing to happen to you today"
TF2: Spy