diff --git a/README.md b/README.md
index 2d6f9a9..9807288 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,55 @@
 # zord-tree
 
-Library for golang to build articles tree from file system.
+Library for golang to build articles tree from file system. The file should be in specific format to hold meta data, id and
+content.
+
+Process should go in two steps:
+
+* populate existing `source` directory with formatting files, add missing `id` and meta data
+* build `Tree` to operate on object for your app
+* read file content without meta data by path
+
+
+## File and tree format
+
+### Category
+
+During building `Tree` directory path is converted into array of categories. So, file in path `linux/command/video` will get
+categories: `linux`, `command`, `video`.
+
+### Split line
+
+File meta should be split by `---` line. If there is markdown formating to mark header, first such case (`---`) will be formatted
+to contain empty line. Example:
+
+```
+Text
+---
+```
+
+will become
+
+```
+Text
+
+---
+```
+
+### Meta data
+
+Meta data separated by lines and in format `name: value`. By default library supports `tags` as comma separated array.
+During populating tree it adds missing `id` in `abcex` format and empty meta data lines and saves in `source` directory then copy
+to `destination` directory.
 
 
 ## Notes
+
+### Future plans
+
+* add meta as function, ex. today date
+* add meta with default value that should be used if other value is not set, ex. license
+* add search on Tree
+
+### TODO
+
+* test to read file content
diff --git a/testdata/sunny/file1.md b/testdata/sunny/file1.md
index 039c9b4..6563f8d 100644
--- a/testdata/sunny/file1.md
+++ b/testdata/sunny/file1.md
@@ -1,7 +1,7 @@
 tags: t1,t2
+
 description: Če test file __va__
 option1: test option
-
 ---
 
 # Če kažkas torietom būtė
diff --git a/tree.go b/tree.go
index 1744a1e..3d181af 100644
--- a/tree.go
+++ b/tree.go
@@ -33,6 +33,11 @@ func BuildTree(dirPath string, meta []string) (Tree, error) {
 }
 
 func PopulateTree(sourcePath string, destPath string, meta []string) error {
+	err = fixFormat(sourcePath)
+	if err != nil {
+		return err
+	}
+
 	id, err := getMaxId(sourcePath)
 	if err != nil {
 		return err
@@ -54,6 +59,56 @@ func PopulateTree(sourcePath string, destPath string, meta []string) error {
 	return err
 }
 
+func fixFormat(dir string) error {
+	err := filepath.Walk(dir, func(path string, info os.FileInfo, e error) error {
+		if e != nil {
+			return e
+		}
+
+		if info.Mode().IsRegular() {
+			b, err := ioutil.ReadFile(path) // just pass the file name
+			if err != nil {
+				return  err
+			}
+
+			osf, err := os.Open(path)
+			if err != nil {
+				return err
+			}
+
+			// remove all empty lines and separate split line
+			content := ""
+			format := true
+			scanner := bufio.NewScanner(osf)
+			scanner.Split(bufio.ScanLines)
+			for scanner.Scan() {
+				line := scanner.Text()
+				if line == "---" {
+					format = false
+				}
+
+				if (format) {
+					line = strings.Trim(line, " ")
+					if (line != "") {
+						content = content + "\n" + line
+					}
+				} else {
+					content = content + "\n" + line
+				}
+			}
+			err = ioutil.WriteFile(path, []byte(content), 0644)
+
+			// format split line
+			str := string(b)
+			str = strings.Replace(str, "\n---\n", "\n\n---\n", 1)
+			err = ioutil.WriteFile(path, []byte(str), 0644)
+		}
+		return nil
+	})
+
+	return err
+}
+
 func addMissingMeta(dir string, meta []string) error {
 	err := filepath.Walk(dir, func(path string, info os.FileInfo, e error) error {
 		if e != nil {
@@ -95,11 +150,8 @@ func addMissingMeta(dir string, meta []string) error {
 		}
 		return nil
 	})
-	if err != nil {
-		return err
-	}
 
-	return  nil
+	return  err
 }
 
 func addMissingId(dir string, id int64) error {
@@ -271,3 +323,40 @@ func readFile(file fs.FileInfo, fullPath string, category []string, meta []strin
 
 	return f, nil
 }
+
+func ReadFileContent(file File) (string, error) {
+	osf, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+
+	content := ""
+	removeEmptyLine := true
+	isMetaPart := true
+	scanner := bufio.NewScanner(osf)
+	scanner.Split(bufio.ScanLines)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line == "---" {
+			isMetaPart = false
+			continue
+		}
+
+		if (isMetaPart) {
+			continue
+		}
+
+		if (removeEmptyLine) {
+			line = strings.Trim(line, " ")
+			if (line == "") {
+				continue
+			} else {
+				removeEmptyLine = false
+			}
+		}
+
+		content = content + "\n" + line
+	}
+
+	return content, nil
+}
diff --git a/tree_test.go b/tree_test.go
index 42b048b..8efa48e 100644
--- a/tree_test.go
+++ b/tree_test.go
@@ -47,6 +47,38 @@ func TestSunny(t *testing.T) {
 	t.Log(tree)
 }
 
+func TestFixFormat(t *testing.T) {
+	err := os.Remove("./testdata/sunny1")
+	if err != nil {
+	}
+	err = os.Remove("./testdata/sunny2")
+	if err != nil {
+	}
+	err = cp.Copy("./testdata/sunny", "./testdata/sunny1")
+	if err != nil {
+		t.Fatal("Couldn't prepare data for testing")
+	}
+
+	err = PopulateTree("./testdata/sunny1", "./testdata/sunny2", []string{})
+	if err != nil {
+		t.Fatal("Population ended in err:", err)
+	}
+
+	b, err := ioutil.ReadFile("./testdata/sunny2/file1.md")
+	if err != nil {
+		t.Fatal("No destination file 'file1.md'.")
+	}
+	str := string(b)
+	if !strings.Contains(str, "tags: t1,t2\ndescription: Če test file __va__\n") {
+		t.Fatal("Empty lines has not been removed in file 'file1.md'.")
+	}
+	if !strings.Contains(str, "\n\n---\n") {
+		t.Fatal("Split line has not been formatted in file 'file1.md'.")
+	}
+
+	t.Log(tree)
+}
+
 func TestMeta(t *testing.T) {
 	err := os.Remove("./testdata/sunny1")
 	if err != nil {