The primary thing you need to walk away with from an Awesome Note users guide for the iPhone is that it is broken down into specific aspects of your life. Your Diary is going to be the most amorphous part of this entire iPhone app, mainly because it does not reflect a concrete tool. Since it is not easy to work with and does not benefit you in a direct social networking context, this may not be the first place you want to go.
Instead, Study, Shopping, and To Do Lists are going to be the main functionality of Awesome Note for the iPhone, and you should make sure that you separate the content you include in each version as much as possible. The To Do Lists are going to be the bulk of this as Awesome Note allows you to really break down your day into a series of events and then scroll through them one at a time.
The Study notes are a little less specific and you can tailor each note to your exact academic needs. Shopping is interesting because it is not based around a "grocery store" list format, but instead longer term shopping goals such as home items you need to pick up. This is good because it allows for a set due time for your shopping needs, which creates a staggering between appointments that really allows Awesome Notes on the iPhone to be of practical use. This is only going to act as such, however, if you add the appropriate lists in each one, focusing on To Do Lists as the primary location and leaving Diary behind unless it is immediately pertinent. As long as each one has a different pattern of alerts and behaviors then it will go about notifying with specific purposes, so you will know how to approach them and will not ignore the alerts.