Reddit mentions of A Random Walk Down Wall Street: The Time-Tested Strategy for Successful Investing (Eleventh Edition)

It's a bit technical, but I think A Random Walk Down Wall Street is one of the better books about investing that's ever been written. It focuses more on the theory and historic patterns of investing, but it does have solid personal finance advice as well. It's one of those books that teaches you more than you really need to know but makes you quite a bit wiser for the experience.

There's also a "Bogleheads Guide to Retirement Planning" that may be more practical if that's what you're looking for.

A random walk down Wall Street

You should start by reading The Bogleheads' Guide to Investing and A Random Walk Down Wall Street. Both are short reads and very useful for beginning investors.

These books, and most of the people at /r/personalfinance, will tell you that your best bet is to buy index funds. They will also point you to Vanguard, who generally has the lowest fees around. There are a couple of strategies that get advertised a lot:

1. Buy a target date fund. You just choose when you want to retire and invest in that fund. It has a balance of domestic and foreign stocks and bonds that shift towards more bonds as your retirement date approaches. Example: Vanguard Target Retirement 2045 Fund (VTIVX)
   
   
2. Buy a "3 fund portfolio". This is generally a broad domestic stock index, a broad international stock index, and a broad bond index. This could be VTSMX, VGTSX, and VBMFX.
   
   In terms of your money, you should start by maxing your IRA and 401(k) contributions each year, and then invest however much more into a standard "taxable" account. Note that you generally want your bond holdings in a tax-sheltered IRA or 401(k). Also note that there are other companies that offer low-fee index funds as well.

I agree with this. Keep your costs down and follow a simple plan - Canadian Couch Potato is good, also these books are helpful references for investors making their own portfolio: A Random Walk Down Wall Street by Burton G Malkiel and Rob Carrick's Guide to What's Good, Bad and Downright Awful in Canadian Investments Today. If you don't want to bother learning even the basics, or have a small amount of money to invest, consider a robo-advisor.