Here are some GREAT pages for researching this author.
Christian Stange's Dostoevsky Site This is the biggest and best site that I have found on the internet for our dear Dostoevsky. Very incredible!
The World of Dostoevsky This site is in Russian and English, it contains quotes and interesting portraits.
SparkNotes Online Study GuidesThis web site is a very thorough compilation of study questions, chapter summaries, character analysis, and relevant quotes. It's excellent for browsing after or during your read of the novel.
Middlebury College Online Course Assistance for Crime and PunishmentHere is an interesting page that treats each chapter with a small synopsis and discusses the characters of the novel. It's worth a look.