On a typical page for an actor consists of: a small Bio, where they were born, photos and what they are known for. This "what they are known for section" is incredibly useful if you wish to see more of an actor at their best.
Where IMDb really shines is its film and TV pages though. On these you will find: the title, a score out of ten given by IMDb's own critics, a synopsis and the actors involved with their characters names at the side. This is especially helpful as it allows the user to seek out their favourite actors in a certain film to find more of their work. This was the case with me and Sam Rockwell when i watched "Green Mile" and loved his performance. from just 5 minutes of searching i had compiled a list films featuring him and also films related to those that i may enjoy. All in all, IMDb is a very useful tool for someone wishing to widen their film vocabulary and also strengthen their knowledge around the whole subject.