diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3dee4e5..1c23360 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1 +1,17 @@
+## How to contribute
+
Use pull requests to contribute to the project.
+
+Stick to the following format:
+
+
+[Question]
+
+[Answer]
+
+
+## What to avoid
+
+* Avoid adding installation questions. Those are the worst type of questions...
+* Don't copy questions and answers from other sources. They probably worked hard for adding them.
+* If you add new images, make sure they are free and can be used.
diff --git a/README.md b/README.md
index aad2aa9..7c7dad8 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
:information_source: This repository contains interview questions on various DevOps related topics
-:bar_chart: There are currently **409** questions
+:bar_chart: There are currently **413** questions
:warning: You don't need to know how to answer all the questions in this repo. DevOps is not about knowing all :)
@@ -2375,6 +2375,68 @@ It looks what unicode value is set at 101 and uses it for converting the integer
If you want to get "101" you should use the package "strconv" and replace y = string(x) with y = strconv.Itoa(x)
+
+What is wrong with the following code?:
+
+```
+package main
+
+func main() {
+ var x = 2
+ var y = 3
+ const someConst = x + y
+}
+```
+
+
+
+
+What will be the output of the following block of code?:
+
+```
+package main
+
+import "fmt"
+
+const (
+ x = iota
+ y = iota
+)
+const z = iota
+
+func main() {
+ fmt.Printf("%v\n", x)
+ fmt.Printf("%v\n", y)
+ fmt.Printf("%v\n", z)
+}
+```
+
+
+
+
+What _ is used for in Go?
+
+
+
+What will be the output of the following block of code?:
+
+```
+package main
+
+import "fmt"
+
+const (
+ _ = iota + 3
+ x
+)
+
+func main() {
+ fmt.Printf("%v\n", x)
+}
+```
+
+
+
## Mongo