The movie was great. They missed some small details and skipped parts that were important to my enjoyment and understanding of the book, but overall they did well enough for the sake of the movie. For example, Thresh was my favorite character of the first book but it was nearly impossible to portray his importance on screen as most of it was Katniss' thoughts and interpretations.
Also, some scenes are really cheesy in terms of special effects. For example, the capitol scenes with large crowds didn't seem relatively realtistic (I understand this is sci-fi but you could clearly notice computer graphic alterations)
Overall, the movie had a solid pace and focused on what is really important throughout the first book, Katniss. Jennifer Lawrence does a superb job playing the teen heroine and brought a lot of substance to a movie that could have easily fell into disaster. In the end the movie shined through for the fact that it didn't offset reader's of the book such as me and my girlfriend (Ages 28 and 25) and provided enjoyment for those who weren't familiar with the story at all (My older sister who attended the film with me Aged 30)