A Titanic Library
Some of the best books about Titanic are available in free eBooks.
Filson Young Titanic (1912)
Morgan Robertson, Futility (1898)
Yup, 1898. This is the famous "prediction" of the wreck.
The Scientific American Handbook of Travel (1910)
Oh, this is just lovely. Everything you need to know to travel across the sea in 1910. It is a hyooge book (over 600 pages) with wonderful illustrations. Pack up your steamer rug, slap the Wanted on Voyage sticker on your cabin trunk, and let's go.
Col. Archibald Gracie, The Truth about the Titanic (1913)
Lawrence Beesley, The Loss of the S.S. Titanic (1912)
RMS Titanic, an essay by Hanson Baldwin, in Harper's Magazine, 1934. This link may work; if you copy and paste it, it does work.
Lucy Duff Gordon, Discretions and Indiscretions, 1932:
Her description of what happened on Titanic starts on p. 147. If you like the period, read the whole book, which is full of delicious Edwardian scandal and gossip.
Marshall Everett, Wreck and Sinking of the Titanic, the Ocean's Greatest Disaster... (1912)
To quote from its Internet Archive description: "Indeed, of all the “instant books” published after the sinking of the Titanic, this one best captures the spirit of the times, and of the public reaction to the disaster. Alongside the harrowing accounts of survivors and their testimony before the Senate investigation, there are chapters of newspaper editorials and sermons preached by prominent clergy. Thus we find that even a hundred years ago, opinion columns were despairing of the modern need for speed, and were calling for stern regulation of the new-fangled “Marconigrams” (radio), while churchmen lauded the spirit of “women and children first,” and preached on “How Shall We View God in the Light of Such a Disaster.” The influence of newspapers on public opinion is also shown in the illustrations, which include many editorial cartoons reacting to the disaster. An essential book for studying the historiography of the Titanic."
Logan Marshall, The Sinking of the Titanic and Great Sea Disasters (1912)
Not available as a freebie, as far as I know, but you can get it on Kindle for $2.99
Ocean Liners of the Past: The White Star Steamers Olympic and Titanic. Originally published in 1911 as a special issue of The Shipbuilder. Since it's actually out of copyright, you'd think it would be available free somewhere, but it's not. The 1970 reprint is widely available. If gigantic engines and Titanic as a machine are your thing, you want this book.