Rework motivation and guide

Author: donnemartin

README.md

@@ -7,15 +7,13 @@
 
 ## Motivation
 
-> Learn how to design large scale systems from the open source community.
->
-> Understand real-world architectures.
+> Learn how to design large scale systems.
 >
 > Prep for the system design interview.
 
 ### Learn how to design large scale systems
 
-Learning how to design scalable systems will help make you a better engineer.
+Learning how to design scalable systems will help you become a better engineer.
 
 System design is a broad topic.  There is a **vast amount of resources scattered throughout the web** on system design principles.
 
@@ -41,24 +39,6 @@ Additional topics for interview prep:
 * [Object-oriented design interview questions, **with solutions**](#object-oriented-design-interview-questions-with-solutions)
 * [Additional system design interview questions](#additional-system-design-interview-questions)
 
-#### For interviews, do I need to know everything here?
-
-**No, you don't need to know everything here to prepare for the interview**.
-
-What you are asked in an interview depends on variables such as:
-
-* How much experience you have
-* What your technical background is
-* What positions you are interviewing for
-* Which companies you are interviewing with
-* Luck
-
-More experienced candidates are generally expected to know more about system design.  Architects or team leads might be expected to know more than individual contributors.  Top tech companies are likely to have one or more design interview rounds.
-
-#### Any resources to prep for coding interviews?
-
-Check out the sister repo [**interactive-coding-challenges**](https://github.com/donnemartin/interactive-coding-challenges) for coding interview resources.
-
 ## Contributing
 
 > Learn from the community.
@@ -166,7 +146,21 @@ Review the [Contributing Guidelines](https://github.com/donnemartin/system-desig
 
 > Suggested topics to review based on your interview timeline (short, medium, long).
 
-![Imgur](http://i.imgur.com/Klsu4cw.png)
+![Imgur](http://i.imgur.com/ciJelTB.png)
+
+**Q: For interviews, do I need to know everything here?**
+
+**A: No, you don't need to know everything here to prepare for the interview**.
+
+What you are asked in an interview depends on variables such as:
+
+* How much experience you have
+* What your technical background is
+* What positions you are interviewing for
+* Which companies you are interviewing with
+* Luck
+
+More experienced candidates are generally expected to know more about system design.  Architects or team leads might be expected to know more than individual contributors.  Top tech companies are likely to have one or more design interview rounds.
 
 Start broad and go deeper in a few areas.  It helps to know a little about various key system design topics.  Adjust the following guide based on your experience, what positions you are interviewing for, and which companies you are interviewing with.