Although I am not Mitch – look at https://www.harptabs.com/ where you can find tons of tons of tunes that should sound familiar to you. Please look for tunes in 1st position for C major diatonic harp.
The tab notation is different from the one Mitch uses. All you need to know for a start is the number stands for the hole you should play. – means draw. Without an additional symbol the number say blow into this hole.
There are books with tabs as well. I found some free ones on the web – will post them later this week if you are interested. Please let me know.
Keep on harping