The number one recommendation is to actually read the lore and sight see as you go around. Knowledge of the lore that it shows you will make the story far more interesting. Just don't rush the main story. Take the scenic route and avoid any spoilers or even tips on most things, they aren't needed.

Only combat tip I have is that every weapon type and element has a use. Don't do what I do and only use 1 or 2 things and forget. There will be a challenge/tutorials thing here and there which shows you what different weapons or elements do.

Enjoy!