diff --git a/.gitignore b/.gitignore
index f4d432a..1cb0671 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,6 @@
 # Dependency directories (remove the comment below to include it)
 # vendor/
 
+/tags
+/testdata/sunny1/
+/.idea/
diff --git a/README.md b/README.md
index 136dfed..2d6f9a9 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,6 @@
 # zord-tree
 
-Library for golang to build articles tree from file system.
\ No newline at end of file
+Library for golang to build articles tree from file system.
+
+
+## Notes
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..ec8b3ad
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module g.arns.lt/zordsdavini/zord-tree
+
+go 1.16
+
+require github.com/otiai10/copy v1.5.1
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..651daea
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,7 @@
+github.com/otiai10/copy v1.5.1 h1:a/cs2E1/1V0az8K5nblbl+ymEa4E11AfaOLMar8V34w=
+github.com/otiai10/copy v1.5.1/go.mod h1:XWfuS3CrI0R6IE0FbgHsEazaXO8G0LpMp9o8tos0x4E=
+github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95/go.mod h1:9qAhocn7zKJG+0mI8eUu6xqkFDYS2kb2saOteoSB3cE=
+github.com/otiai10/curr v1.0.0/go.mod h1:LskTG5wDwr8Rs+nNQ+1LlxRjAtTZZjtJW4rMXl6j4vs=
+github.com/otiai10/mint v1.3.0/go.mod h1:F5AjcsTsWUqX+Na9fpHb52P8pcRX2CI6A3ctIT91xUo=
+github.com/otiai10/mint v1.3.2 h1:VYWnrP5fXmz1MXvjuUvcBrXSjGE6xjON+axB/UrpO3E=
+github.com/otiai10/mint v1.3.2/go.mod h1:/yxELlJQ0ufhjUwhshSj+wFjZ78CnZ48/1wtmBH1OTc=
diff --git a/testdata/sunny/file1.md b/testdata/sunny/file1.md
new file mode 100644
index 0000000..ec37c83
--- /dev/null
+++ b/testdata/sunny/file1.md
@@ -0,0 +1,10 @@
+tags: t1,t2
+description: Če test file __va__
+
+---
+
+# Če kažkas torietom būtė
+
+* lists
+
+__va__
diff --git a/testdata/sunny/file2.md b/testdata/sunny/file2.md
new file mode 100644
index 0000000..d964887
--- /dev/null
+++ b/testdata/sunny/file2.md
@@ -0,0 +1,8 @@
+tags: t1
+description: Če test 2
+
+---
+
+# Če kažkas torietom būtė 2
+
+ale nie
\ No newline at end of file
diff --git a/testdata/sunny/subcategory/file3.md b/testdata/sunny/subcategory/file3.md
new file mode 100644
index 0000000..d7253ff
--- /dev/null
+++ b/testdata/sunny/subcategory/file3.md
@@ -0,0 +1,10 @@
+tags: t1
+description: Če test 3
+
+---
+
+# Če kažkas torietom būtė 3
+
+* vëns
+* do
+* trīs
diff --git a/tree.go b/tree.go
new file mode 100644
index 0000000..768157f
--- /dev/null
+++ b/tree.go
@@ -0,0 +1,109 @@
+package zord_tree
+
+import (
+	"bufio"
+	"io/fs"
+	"io/ioutil"
+	"os"
+	"path"
+	"strings"
+)
+
+type File struct {
+	id string
+	name string
+	fullPath string
+	category []string
+	tags []string
+	meta map[string]string
+	description string
+	lang string
+}
+
+type Tree struct {
+	path string
+	dirs []Tree
+	files []File
+}
+
+func BuildTree(dirPath string) (Tree, error) {
+	return readPath(dirPath, []string{})
+}
+
+func readPath( dirPath string, category []string ) (Tree, error) {
+	tree := Tree{}
+
+	tree.path = dirPath
+
+	files, err := ioutil.ReadDir(dirPath)
+	if err != nil {
+		return tree, err
+	}
+
+	for _, file := range files {
+		fullPath := path.Join(dirPath, file.Name())
+		if file.IsDir() {
+			nextDir, err := readPath(fullPath, append(category, file.Name()))
+			if err != nil {
+				return tree, err
+			}
+			tree.dirs = append(tree.dirs, nextDir)
+			continue
+		}
+
+		_, err := ioutil.ReadFile(fullPath)
+		if err != nil {
+			return tree, err
+		}
+		nextFile, err := readFile(file, fullPath, category)
+		if err != nil {
+			return tree, err
+		}
+		tree.files = append(tree.files, nextFile)
+	}
+
+	return tree, nil
+}
+
+func readFile(file fs.FileInfo, fullPath string, category []string) (File, error) {
+	f := File{
+		name: file.Name(),
+		fullPath: fullPath,
+		category: category,
+	}
+
+	osf, err := os.Open(fullPath)
+	if err != nil {
+		return File{}, err
+	}
+	scanner := bufio.NewScanner(osf)
+	scanner.Split(bufio.ScanLines)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line == "---" {
+			break
+		}
+
+		if strings.HasPrefix(line, "tags:") {
+			line = strings.TrimPrefix(line, "tags:")
+			t := strings.Split(line, ",")
+			tags := []string{}
+			for _, tag := range t {
+				tags = append(tags, strings.Trim(tag, " "))
+			}
+
+			f.tags = tags
+		}
+		if strings.HasPrefix(line, "description:") {
+			line = strings.TrimPrefix(line, "description:")
+			f.description = strings.Trim(line, " ")
+		}
+		if strings.HasPrefix(line, "lang:") {
+			line = strings.TrimPrefix(line, "lang:")
+			f.lang = strings.Trim(line, " ")
+		}
+	}
+	osf.Close()
+
+	return f, nil
+}
diff --git a/tree_test.go b/tree_test.go
new file mode 100644
index 0000000..db739dd
--- /dev/null
+++ b/tree_test.go
@@ -0,0 +1,46 @@
+package zord_tree
+
+import (
+	cp "github.com/otiai10/copy"
+	"os"
+	"testing"
+)
+
+func TestFromNotExistingDirectory(t *testing.T) {
+	_, err := BuildTree("./testing/i_dont_exist")
+	if err == nil {
+		t.Error("Not existing directory should return error, got NIL.")
+	}
+}
+
+func TestSunny(t *testing.T) {
+	err := os.Remove("./testdata/sunny1")
+	if err != nil {
+	}
+	err = cp.Copy("./testdata/sunny", "./testdata/sunny1")
+	if err != nil {
+		t.Fatal("Couldn't prepare data for testing")
+	}
+	tree, err := BuildTree("./testdata/sunny1")
+	if err != nil  {
+		t.Errorf("Got error: %v", err)
+	}
+
+	if len(tree.dirs) != 1 {
+		t.Errorf("Should be 1 subdirectory, got %v", len(tree.dirs))
+	}
+
+	if tree.dirs[0].files[0].name != "file3.md" {
+		t.Errorf("File should be 'file3.md', got %v", tree.dirs[0].files[0].name)
+	}
+	if tree.files[0].name != "file1.md" {
+		t.Errorf("File should be 'file1.md', got %v", tree.files[0].name)
+	}
+	if len(tree.files[0].tags) != 2 {
+		t.Errorf("File 'file1.md' should have 2 tags, got %v", len(tree.files[0].tags))
+	}
+	if tree.files[0].tags[1] != "t2" {
+		t.Errorf("File 'file1.md' 2nd tag 't2', got %v", tree.files[0].tags[1])
+	}
+	t.Log(tree)
+}
\ No newline at end of file