Online Chess

So I'm pretty new to this site, and I started a game of Online Chess. There is so much time between each move that it got me thinking -- what is appropriate for "help" in playing a game (or should we try to get help at all)?

Obviously using an engine to select moves would be cheating. But, I could go to other chess sites and look up GM games with the same opening to get ideas about the strongest moves to play as the game unfolds.

I don't want to do anything that is not considered okay, but at the same time if my opponent is doing this kind of research, it would put me at a big disadvantage. I was just interested in seeing how everyone approaches these games.

Thanks.

The rule is you can use anything that's static. So yes, grandmaster games are fine, as are opening databases and books. You can't use engines or advice on a specific position or endgame tablebases.

Thanks Scottrf!