Oxford books are 1 m high from the ground stacked up. You need a crane to move them around.
Unless you get it used half price, don't bother.
Jeppesen or Nordian or Bristol are better suited for self study.
You'll need the Jeppesen Supplement with the charts too, that's included if you opt for the jepp package.
Also
www.bristol.gs online question bank is must either way.