Looks like a great first smoke! Congrats!
There are quite a few on here that make jerky. I think there may be a separate topic area for jerky that you could check out to see what your thoughts might be.
That said, if you decide you need a fan, there are some posts on here for DIY style fans that cost you about $25 in total. I made one for myself that I use for sausage and salmon. It seems to work pretty good.
And welcome to the board!