There are some good ones that you should pick up.
Ron White’s recent one-volume biography “A. Lincoln – a biography” is considered by many the best one that has come out around the Bicentennial.
Two more specific works that I have liked are Harold Holzer’s “Lincon – President Elect” about the time between Lincoln’s election and his inauguration. Anthony Pitch wrote a book about Lincoln’s murder entitled “They Have killed Papa Dead” that is a good read. “Manhunter” by Swanson is another good book on the assassination.

A friend of mine, Jim Percoco, wrote a book called “Summers with Lincoln” that is unusual. Jim is an award-winning teacher from Virginai that immerses his students in the subject of history and Lincoln. His book is about his work with his students and how he uses statues of Lincoln to reveal things about Lincoln and his students attitudes towards history.

The only Lincoln book I’ve read to date is “Team of Rivals” by Doris Kearns Goodwin. Not strictly a biography, but a very good insight into his administration. Maybe you’ve heard of it – it’s a relatively recent book and Obama apparently read it, fwiw.

Fascinating, and also long.