The Long and the Short of It by John Kay
An excellent primer of finance, including shares, bonds, funds and how companies operate. Goes into great detail and some bits can be skipped but also offers straightforward advice on investing and cuts through a lot of the nonsense put forward by finance companies.
Rich Dad Poor Dad by Robert T. Kiyosaki
A bit controversial in some quarters as people have questioned its veracity, but the simple message about using money to buy income-producing assets is explained in very easy to read language and in a convincing style.
The 3 + 1 Plan by Brett Alegre-Wood
Recommended reading for property investors – how to retire on your own home and three investment properties.
Cashflow Quadrant by Robert T. Kiyosaki
Another recommendation from the author of Rich Dad Poor Dad which takes the ideas one step further and explains how to manage income and reduce taxes to accelerate your journey to financial independence.