As has been stated, Austin, it all depends on how you learn.
My learning for the written and oral has been as follows, for both PPL and IR:
-Buy the book to read (cheap)
-Buy the Gleim test prep software (also cheap)
-Have my instructor fill in the blanks (included in the price of my lesson, since he answers questions while we're flying)
I borrowed my boss's Jepp DVDs for the instrument rating, and it put me to sleep more than once. Clearly, this method of learning was not one I found effective. They are very dry and boring. But, if you find that this method works for you, go for it. I found it was better to read the books (which could also try to put me to sleep, but then I just picked up where I left off) and use the Gleim study software. The Gleim is great to me because it familiarizes you with the format and the exact questions and answers you're going to see. The wording on the written can be ambiguous, and it helps to understand what they're asking and looking for in answers. Sometimes they give three answers (since it's multiple choice) and all three of them seem plausible.
Keep in mind, though, you shouldn't actually bother taking the written for another few years. They're only good for 2 years anyway after you pass them, so if you take one now it'll be expired before you can take your check ride. Personally, I think it's best to take it shortly before you're ready for your check ride. That way all the material is fresh in your head. The written and the oral are independent tests, but not completely independent material.