refactor: first four section, organize cont.

02-write-your-first-program/exercises/01-print-names/main.go

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+// ---------------------------------------------------------
+// EXERCISE: Print names
+//
+//  Print your name and your best friend's name using
+//  Println twice
+//
+// EXPECTED OUTPUT
+//  YourName
+//  YourBestFriendName
+//
+// BONUS
+//  Use `go run` first.
+//  And after that use `go build` and run your program.
+// ---------------------------------------------------------
+
+func main() {
+	// ?
+	// ?
+}

02-write-your-first-program/exercises/01-print-names/solution/main.go

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+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+// go run main.go
+
+// go build
+// ./solution
+
+func main() {
+	fmt.Println("Nikola")
+	fmt.Println("Thomas")
+}