Don't forget to add. (To give her)
Your appetite for Risk? Are you conservative or a player?
Your age in investments is very important.
Since area in investments is so large, you need to streamline categorically. I doubt the best "general" investment books can make you successful. Find the area in which you have the most interest,
and get a book for that specific area only. Your brokerage house and Google can supply you with just as much information.
Timing is everything, therefore a word of advice -- what held true when the book was written, may not be so Golden after all.
A big area, take everything under consideration to broaden your learning curve but take the advice with a grain of salt.
I could teach you investments (lol). On a serious note, tell me more about the specific area you want to learn about and I can point you in the right direction. If you so desire, you can send me an e-mail with more details and I will be more than happy to help. In the meantime, these areas could range from:
Investments - Private or institutional, fund management, asset management, Mutual funds or unit trusts, ISAs, day-trading, hedge funds, derivatives, options, futures, swaps, forex and commodity trading, offshore investing, capital investment bonds, Govt Gilt, corporate bonds (investment and non-investment grade) etc
Pensions - Different types and allowable investments etc.
Alternative investing - private equity, venture capital etc.
This is by no means exhaustive and do not let the long list put you off.
I work in investments so if you can streamline what you want to learn and let me know, then I can recommend some/a course or a trainer for you.