As an aside, fake books are a great way to get your feet wet learning how to extemporize while still having some guidance around the chord progression and melody.
If you have an iPad, there's an app called iReal Pro with loads of lead sheets that add in some accompaniment (drums, guitar, etc.) so you can "play along" as well.
If you have an iPad, there's an app called iReal Pro with loads of lead sheets that add in some accompaniment (drums, guitar, etc.) so you can "play along" as well.
https://www.irealpro.com