What does it mean to have a Profile? How many should one have? If you have more then one what does it mean? 

ICP what does it mean? Will it change? Will I know if it changes? 

What does Data Summary mean? 

On the ICP Profile (summary) what do all the numbers mean? If there is a rating, are all companies that handle this expected to know what the rating is? Is it a standard set of numbers?

On the Data Summary page, what is the meaning of each breakdown? What do the numbers mean? 

What Does 'Opportunity's Probability' Mean in Salesforce Fields? 

What is Lifetime?