First and most importantly: forget the internet and books. And words in general. Find people similar to yourself and observe what works and doesn't work for them.
But since we're already here, what I think worked for me (40y old and it's gotten better with age): be yourself. Yep, that old shit. But the why and how is more important. Being 100% sincere with yourself and others will free you of tedious interactions with people who enjoy things you don't. And when you exaggerate in the PhD direction (because trust me, you do) the sincerity will cause feedback loops that will get the interaction to an equilibrium much faster than if any or both parties are pretending.
But since we're already here, what I think worked for me (40y old and it's gotten better with age): be yourself. Yep, that old shit. But the why and how is more important. Being 100% sincere with yourself and others will free you of tedious interactions with people who enjoy things you don't. And when you exaggerate in the PhD direction (because trust me, you do) the sincerity will cause feedback loops that will get the interaction to an equilibrium much faster than if any or both parties are pretending.