need to sync my new ipad mini from ipad2

Here is the step by step guide

Transfer content from an iPhone, iPad, or iPod touch to a new device - Apple Support

IF using iTunes - make sure you have the latest version 12.3.3

Backup the older iPad to iTunes

Then connect the new iPad to the same iTunes

Click on restore from backup and choose the back up you just made

Please ask if you need more direction or are stuck at any point

This really does a pretty good job of explaining what to do. If you don't understand something, just post back. Many people will be able to help.

Transfer content from an iPhone, iPad, or iPod touch to a new device - Apple Support