Book info:
User info:

Books:
The_Hitchhiker's_Guide_To_The_Galaxy,Douglas_Adams
Watership_Down,Richard_Adams
The_Five_People_You_Meet_in_Heaven,Mitch_Albom
Speak,Laurie_Halse_Anderson
I_Know_Why_the_Caged_Bird_Sings,Maya_Angelou

Reviews:
    Anne   5   0   0  -1   1
     Bob   5   5   0  -3   3
    Mary   1   1   0   1   1
    John  -1   5   0   3   1

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Enter your username:
Hello Anne!

Correlations:
Anne 0.0
Bob 2.8
Mary 4.5
John 7.2

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Bob recommends:
Watership_Down,Richard_Adams 5
