Clarify purpose and use of guide

[madebygps]

A few questions I recommend you answer so users can find more use to the guide

• What is the purpose of the guide
• What does it prepare you for
• What pre reqs should one have
• How are you supposed to work through it
• roughly how long would it take someone to accomplish everything the guide outlines
• how do I know if I'm ready to move on to next phase

[rishabkumar7]

thanks @madebygps for the feedback, will add that