Add how to prepare for an interview page

prepare_for_interview.md

@@ -0,0 +1,25 @@
+## How to prepare for an DevOps interview?
+
+Note: the following suggestions are opinionated
+
+### Coding
+
+Some (if not most) DevOps interviews include coding tasks/questions. Be prepared for those by doing actual coding before the interview.
+Also, when given the chance to choose any language, choose the one you have experience with and not the one the company is using or you think it's using.
+
+### Prepare by answering interview questions
+
+Make a sample list of interview questions on different topics: technical, company, role, ... and try to answer them. See if you can manage answering them in a fluent, detailed way.
+
+### Know your resume
+
+It may sounds strange but the idea here is simple: be ready to answer any question regarding any line you included in your resume.
+Sometimes candidates surprised when they are asked on a skill or line which seems to be not related to the position but the simple truth is: if you mentioned it, it's only fail to ask you about it.
+
+### Know the company
+
+Be familiar with the company you are interviewing at. Some ideas:
+
+  * What the company does
+  * What products it has
+  * Major achievements