when was it published?
In 1984.
The Book of Lost Tales
For publication the book was split into two volumes: "The Book of Lost Tales 1" (1983) and "The Book of Lost Tales 2" (1984), but this is simply an editorial division. Both volumes are separated into several "Lost Tales".
how old was bilbo when he found the ring 60 years old. does he appear in any fictional work? The title character and protagonist of J. R. R. Tolkien's 1937 novel "The Hobbit", a supporting character in "The Lord of the Rings", and the fictional narrator of all Tolkien's Middle-earth writings. what is his role in these stories? Was a hobbit . who is the novelist mentioned here? English writer, poet, philologist, and academic. who are some of his ancestors? Michel Tolkien, Christianus Tolkien, Daniel Gottlieb Tolkien,  Benjamin Tolkien. did he fight in any war? No, He was a temporary second lieutenant any other titles written by him? "The Book of Lost Tales", the tale of Beren and Lúthien, "The Lays of Beleriand". what is the first one about? It is a collection of early stories by writer, which were complex fictional myths.
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The Book of Lost Tales [SEP] Introduction
The Book of Lost Tales is a collection of early stories by English writer J. R. R. Tolkien, published as the first two volumes of Christopher Tolkien's 12-volume series "The History of Middle-earth", in which he presents and analyzes the manuscripts of those stories, which were the earliest form of the complex fictional myths that would eventually comprise "The Silmarillion". Each of the Tales is followed by notes and a detailed commentary by Christopher Tolkien. For publication the book was split into two volumes: "The Book of Lost Tales 1" (1983) and "The Book of Lost Tales 2" (1984), but this is simply an editorial division.