Update README.md

Author: alexlobera

README.md

@@ -12,6 +12,10 @@ You need to have `node`and `npm`installed in your computer.
 
 ## Exercise
 
+Before you start, there are two types of components [Functional Components and Class Comonents](https://reactjs.org/docs/components-and-props.html#functional-and-class-components).  Use a Functional component if your component doesn't have state.
+
+### Tasks
+
 1- Refactor the “about” and “footer” sections by creating a stateless component for each. Make sure everything works.
 
 
@@ -21,10 +25,10 @@ You need to have `node`and `npm`installed in your computer.
 3- Refactor the books section by creating a stateless component and pass the dependencies via props. Make sure everything works.
 
 
-4- Is there any state in app that should be in the Books component?  Refactor <Books> books if appropriate. Should <Books> be a stateless component or a class now?
+4- Is there any state in app that should be in the Books component?  Refactor &lt;Books&gt; books if appropriate. Should &lt;Books&gt; be a stateless component or a class now?
 
 
-5- Break <Books> down into  <BookList> and <BookFilter>
+5- Break &lt;Books&gt; down into  &lt;BookList&gt; and &lt;BookFilter&gt;
 
 
 6- What do you think it would make sense to componentize next? Are there any parts on that view that you can reuse? Try to explain to a mentor what you want to refactor before you code :)