Black, like everyone else.
Black.
No, the students don't need to have "Hogwarts: A History". It's not on the equipment list of the students, but it's available in the library of Hogwarts.
First year students are required to bring three sets of black robes to Hogwarts.
You are 11 when you receive your letter and you arrive the following september.
Students are classified by their year of study. There are seven years at Hogwarts, named first year, second year etc. Students study their O.W.L's from their third to fifth year and their N.E.W.T's in fifth and seventh year.
No. First years at Hogwarts are 11-12 years old and seventh years are 17-18. Hogwarts includes high school aged students, but is not exclusively a high school.
No. Care Of Magical Creatures is an elective that Hogwarts students can take in second year, along with Divination or Ancient Runes.
From the first year it self students at Hogwarts have The Defence Against The Dark Arts subject. The depth and difficulty increases year by year.
In "Harry Potter and the Philosopher's Stone," the first-year students are met at the train station by Hagrid, the Keeper of Keys and Grounds at Hogwarts. He helps them with their luggage and leads them to the boats that take them across the lake to Hogwarts. Hagrid's friendly demeanor offers a warm welcome to the new students as they embark on their magical journey.
Tuition at Hogwarts is free. When Dumbledore first met Tom Riddle, he (Dumbledore) said the school had a special fund for students in need so that he could buy his books and robes.
Hogwarts Express.
No, Harry Potter was eleven years old. He celebrated his birthday a month before term started. Students must be eleven to start Hogwarts and most turn twelve during their first year.