To summarize the first two (very roughly): The market isn't perfect and there are a lot of undervalued companies that are great. You have to find these companies at a significant discount to what they are really worth, and then you have to be patient enough for everyone else to realize their error.

The third would IMHO be more geared towards someone that wanted to be a professional. Fisher talks extensively about ways to interview management/competitors/clients for information not found on a balance sheet, and prefers to look for new technology companies with huge potential upsides. He admits himself that most of his success was due to a half dozen huge wins in his entire life, and he tries to document how to find such wins.

Realize that with Buffet's reading list you are going to end up wanting to invest like Buffet/Graham/Fisher, which means patience and a lot of due diligence on what you buy.

If you don't have 100 hours a week to research/interview prospects, Buffet and Graham would both recommend that you set a good allocation and buy index funds. Fisher would probably tell you the same, as he makes it very clear that he never buys a single stock without knowing the company like it was his own (which often included knowing the management on a first name basis).

And remember, the key to allocation-based investing is rebalancing, so you periodically lock in gains and don't get overly concentrated in one thing over time.