A:AnswerNo, the iPad 10th generation uses USB-C, not Lightning. You'll need a USB-C compatible stylus or the Apple Pencil (1st gen) with a USB-C adapter.
A:AnswerNo the iPad doesn’t have a port for usb devices but there are adapters that you can purchase that you can plug into the iPad , along with the usb flash drive
A:AnswerNo, the memory AND storage are not upgradeable.
You need to buy the iPad with more Storage.
Memory and Storage are different. 64gb is the storage and the memory is 4gb of ram.
Think of storage is how many photos you can take, and memory as how many chrome tabs you can open.