Business Plan Pro is an excellent tool and I believe you'll find it very easy to use. However, there are some very helpful tutorials found here:
Also, Palo Alto Software technical support can help you with software-related issues. They're not available to help you with your plan itself, but if you have difficulties installing the software or using its features, they are a great help.
There is a service known as Business Plan Specialists that is available for a small fee. The Business Plan Specialists schedule phone appointments, typically an hour in length, and they can help you with your business plan. Keep in mind, they won't be able to answer unique questions that apply to your business, but they can help answer questions about business planning and are a great source of assistance.