This is one of those super rare instances in which the TV show is better than the book. The characters are quite different and as a result of that so are the arcs. I didn't really care for any of the characters in the book but this could possibly be because the TV series has been done such a good job that I can't imagine the characters any other way!
If you aren't familiar with this story, it's about a 40+ year old woman who re-enters the work force after having left it to raise her daughter. She presents herself as a young 20 something to get a job in publishing. She also gets involved in a relationship with a 20 something man named, Josh who doesn't know her real age. This leaves, Alice juggling a lot of balls in the air and it's only a matter of time before the fall.