How to get contents of old iPad onto new iPad?

These support pages should get you started with setup of your new iPad - and the methods of transferring your data from old to new iPad:

Set up your iPhone, iPad or iPod touch – Apple Support

Transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch - Apple Support

Use Quick Start to transfer data to a new iPhone, iPad or iPod touch – Apple Support

For older models of iPad, QuickStart will not be available.

Here is an article that may help.

• Transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch - Apple Support