How do I use the Apple Pencil? What program can I use???

Your Pencil will work with the default iOS/iPadOS Notes app.

If you need apps for your Pencil, there are plenty of third party apps compatible with the Pencil

Most Pencil compatible will be paid apps.

Here's a long, but incomplete list of available third party Pencil apps.

Tap on my Apple Support Community user tip link below.

Apple Pencil Compatible Apps (incomplete … - Apple Community

Best of Luck to You!

Susan24u wrote:

How do I use the Apple Pencil? What program can I use???

See >>> Use Apple Pencil with your iPad - Apple Support

Connect Apple Pencil with your iPad - Apple Support

How to use Apple Pencil (1st & 2nd Generation): The ultimate guide:

https://www.imore.com/apple-pencil-ultimate-guide