Added additional HTML and Interview information (#52)

* Add information about HTML

* Add post interview advice

* Update cheatsheet.md

front-end/html.md

@@ -1,12 +1,16 @@
 HTML
 ==
 
-WIP.
+HTML (Hypertext Markup Language) is the structure that all websites are built on. Anyone working on websites and webapps should have a basic understanding of HTML at the very least. A helpfull analogy for understanding the importance of HTML is the house scenario. When building a new house, the process can be split into a few key areas; strucute (HTML), aesthetics (CSS) and furniture (Content). The HTML is your basic page structure, without the structure, you cannot change how it looks using CSS, or what content is on the page.
 
 ## Glossary
 
 - **Doctype**
 
+## Deprecated Tags
+
+There are a number of tags from past versions of HTML that have become deprecated over time. This means that while they are no longer considered valid elements, most browsers should still be able to read and render them. 
+
 ## Script Loading
 
 - `<script>` - HTML parsing is blocked, the script is fetched and executed immediately, HTML parsing resumes after the script is executed.

preparing/cheatsheet.md

@@ -95,6 +95,13 @@ For a detailed walkthrough of interview preparation, refer to the ["Preparing fo
 |⚠️|Ask about your interview performance. It can get awkward.|
 |❌|End the interview without asking any questions.|
 
+### 7. Post Interview
+
+|| Things |
+|-|-|
+|✅|Record the interview questions and answers down as these can be useful for future reference.|
+|⚠️|Send a follow up email to your interviewer(s) thanking them for their time and the opportunity to interview with them.|
+
 ###### References
 
 - [Preparing for a Facebook/Google Software Engineer Interview](https://orrsella.com/2016/05/14/preparing-for-a-facebook-google-software-engineer-interview/)