) Under any graphic report you will find an area in which you can add notes (aka annotation) with specific dates that will help you to log when a campaign started, website changes or improvements. With this is really easy to track any occurrence that may positively or negatively influence traffic on your website. I like to add notes such as "Improved home page layout", "PPC campaign started". Google "Google analytics annotations" for more info.
2) in Admin Under any VIEW and Channel Settings select "Manage brand terms" there you will have the opportunity to indicate which keywords belong to your brand and almost automatically you will have an additional "Brand Search" segment that will come really handy in your future reports.
