refactor: move questions into their own folder for the first 5 sections

02-write-your-first-program/questions/01-gopath/README.md

@@ -0,0 +1,19 @@
+## Where you should put your Go source code into?
+* Anywhere on my computer
+* Under $GOPATH
+* Under $GOPATH/src *CORRECT*
+
+## What $GOPATH means?
+* It's a file for Go runtime
+* Stores Go source code files and compiled packages
+* It's a path for gophers to follow
+
+## Do you need to set your $GOPATH?
+* Yes
+* No: It's stored on my desktop
+* No: It's stored under my user path *CORRECT*
+
+## How can you print your $GOPATH?
+* Using `ls` command
+* Using `go env GOPATH` command *CORRECT*
+* Using `go environment` command