Can some Veteran players of series share some helpful tips for someone new to this game thanks.

It's not really too difficult until you start running into annoying status effect geo blocks, and those are easy enough to deal with if you pay attention and plan accordingly. If you're just trying to get through the story mode, try not to stretch your party out too thin. Focusing on the story characters, and making sure you've got about five of them getting the bulk of the levels should be enough to where you won't need to grind.

Grind.