I was focusing on my own writing today and so only read two more chapters.
Almost 75% into the book and we've just past Christmas and the Trio have discovered Nicolas Flamel's place in history. Harry receives his father's invisibility cloak and has his first face-to-face meeting with Dumbledore as unexpected result. Harry seemingly makes Quidditch history then spies Snape and Quirrell meet in the forest.
WARNING SPOILER'S BELOW
It's this Snape-Quirrell meeting which creates a potential plot hole later on in the series. Since the spirit of Voldemort is attached to the back of Quirrell's head and Snape is siding with Dumbledore, it seems that Snape's later elevation to Voldemort's right hand man curious since he's stopping his master's return to bodily form.
If Voldemort always believed Snape was his man, why didn't he reveal himself? Or was Voldemort thinking long-term in the event of success or failure with Quirrell by having Snape as a double agent next to Dumbledore?
Things to think about as I continue to re-read the series.