Through nobodys fault but my own, I'm not nearly as well-read as I would like to be, but in the interest of changing that I decided to give Dostoevsky a go, The Idiot being my choice.
Firstly, I should warn you that this book is a commitment. To some, that may not be a problem, and they would laugh that this is 'light reading'. Honestly, each to their own, but for myself (a 23 year old with a fairly average attention span) I found myself struggling from time to time on the 620-or-so pages, not including the supplementary pages. I should note, however, that my difficulty is not a fault of the book (which is beautifully written) becoming dull, but rather of my own inability to really focus on text for great lengths. If you just had a feeling that you're quite similar to me in that respect, then I'm here to tell you: Give it a go. I finished it (albeit after three of four attempts) but on my final attempt I was so glad that I gave the book the attention it deserves.
On a side note, you might also resemble me in the sense that you don't read the prologues, introductions, or supplementary information. For this book, by Richard Pevear, please do. It adds a dimension to the novel that would otherwise be missed. I should note, however, that if you are an expert in Russian history, or a specialist in that field, you may be forgiven for ignoring much of the links as you will already know it, however for the general public, this would not be the case!
The character development is fantastic, and you really care for all (well, most, there are a few characters that I really wanted to just disappear!) of the characters, and their individual webs of thought. It is both a tragedy, and a comedy, and a philosophy lesson, and a most-worthwhile read.
My review isn't incredibly specific, I realise, but I hope that it gives you a different perspective, and perhaps entices you to give this masterpiece a shot!