First time playing Valhalla! Some advice would be welcome

Hello guys!

First time playing this Assassins creed. Loving the game! I just arrived in England and I'm feeling a little overwhelmed with how big and full of content is the world.

So far I've done a couple of raids to gather resources to build a couple of the settlement houses (besides the blacksmith, I did the Hidden ones, the shop and the barracks).

Would you say that Its best to just continue the main story or it's recommended to explore and get better Gear? This game is massive! Any tips? Places to go first or things to do?

Cheers!