diff --git a/ItemInfoPanel.cs b/ItemInfoPanel.cs
index 9a8a60c..0c0402d 100644
--- a/ItemInfoPanel.cs
+++ b/ItemInfoPanel.cs
@@ -1,11 +1,12 @@
+using System.Collections.Generic;
 using System.Linq;
 using Godot;
-using Godot.Collections;
 using Learn.Models;
 
 public partial class ItemInfoPanel : Tree
 {
-	private ItemGroup _item;
+	private IEnumerable<TreeNode> _nodes;
+	private ItemGroup _itemGroup;
 
 	#region Columns Definitions
 	private const int EmptyColumn = 0;
@@ -31,7 +32,7 @@ public partial class ItemInfoPanel : Tree
 		ItemEdited += OnItemEdited;
 	}
 
-	private readonly Dictionary<TreeItem, string> _nodeKeys = new ();
+	private readonly Godot.Collections.Dictionary<TreeItem, string> _nodeKeys = new ();
 	
 	private void OnItemEdited()
 	{
@@ -41,14 +42,23 @@ public partial class ItemInfoPanel : Tree
 		var value = node.GetText(ValueColumn);
 		if (prevKey != currentKey)
 		{
-			_item.Remove(prevKey);
+			_itemGroup.Remove(prevKey);
 		}
-		_item.SetValue(currentKey, value);
+		_itemGroup.SetValue(currentKey, value);
 	}
 
-	public void SetCurrentItem(ItemGroup item)
+	public void SetSelectedNodes(IEnumerable<TreeNode> nodes)
 	{
-		_item = item;
+		if (nodes == null)
+		{
+			_nodes = null;
+			_itemGroup = null;
+		}
+		else
+		{
+			_nodes = nodes;
+			_itemGroup = new ItemGroup(_nodes.Select(node => node.Info).ToList());
+		}
 		OnCurrentItemChanged();
 	}
 	
@@ -56,11 +66,11 @@ public partial class ItemInfoPanel : Tree
 	{
 		Clear();
 		_nodeKeys.Clear();
-		if (_item == null) return;
+		if (_itemGroup == null) return;
 		var root = CreateItem();
-		foreach (var key in _item.GetKeys())
+		foreach (var key in _itemGroup.GetKeys())
 		{
-			if(!_item.TryGetValue(key, out var value, out var isSame)) continue;
+			if(!_itemGroup.TryGetValue(key, out var value, out var isSame)) continue;
 			var node = CreateItem(root);
 			
 			node.SetText(KeyColumn, key);
@@ -73,10 +83,10 @@ public partial class ItemInfoPanel : Tree
 
 	private void AddKeyValue()
 	{
-		if(_item == null) return;
+		if(_itemGroup == null) return;
 		var newFieldName = "newField";
 		int index = 0;
-		while (!_item.TryAdd(newFieldName + (index == 0 ? "" : index.ToString()), ""))
+		while (!_itemGroup.TryAdd(newFieldName + (index == 0 ? "" : index.ToString()), ""))
 		{
 			index += 1;
 		}
@@ -85,13 +95,13 @@ public partial class ItemInfoPanel : Tree
 
 	private void RemoveKeyValue()
 	{
-		if(_item == null) return;
+		if(_itemGroup == null) return;
 
 		var node = GetSelected();
 		var root = GetRoot();
 		while (node != null)
 		{
-			_item.Remove(_nodeKeys[node]);
+			_itemGroup.Remove(_nodeKeys[node]);
 			_nodeKeys.Remove(node);
 			var next = GetNextSelected(node);
 			root.RemoveChild(node);
diff --git a/LearnTree.cs b/LearnTree.cs
index e5b1544..a13330b 100644
--- a/LearnTree.cs
+++ b/LearnTree.cs
@@ -12,8 +12,8 @@ public partial class LearnTree : Tree
 	private ItemInfoPanel _itemInfoPanel;
 	
 	private bool _updateItemInfoPanel;
-	private readonly HashSet<Item> _selectingItems = new ();
-	private readonly Dictionary<TreeItem, Item> _mapper = new();
+	private readonly HashSet<TreeNode> _selectingNodes = new ();
+	private readonly Dictionary<TreeItem, TreeNode> _mapper = new();
 
 	public override void _Ready()
 	{
@@ -25,14 +25,14 @@ public partial class LearnTree : Tree
 		if (_updateItemInfoPanel)
 		{
 			_updateItemInfoPanel = false;
-			_itemInfoPanel.SetCurrentItem(new ItemGroup(_selectingItems));
+			_itemInfoPanel.SetSelectedNodes(_selectingNodes);
 		}
 	}
 
 	private void OnMultiSelected(TreeItem item, long column, bool selected)
 	{
-		if(selected) _selectingItems.Add(_mapper[item]);
-		else _selectingItems.Remove(_mapper[item]);
+		if(selected) _selectingNodes.Add(_mapper[item]);
+		else _selectingNodes.Remove(_mapper[item]);
 		
 		_updateItemInfoPanel = true;
 	}
@@ -51,30 +51,38 @@ public partial class LearnTree : Tree
 		var item = new Item();
 		item.Info["Name"] = name;
 		item.Info["IsDir"] = isDir ? "True" : "False";
+		item.Info["Path"] = path;
 		return item;
 	}
 	
 	private void BuildTree(TreeItem root, string path)
 	{
 		var nodes = new Stack<(TreeItem node, string path)>();
+		_mapper[root] = new TreeNode(null);
 		nodes.Push((root, path));
 		while (nodes.Count > 0)
 		{
 			var node = nodes.Pop();
+			var father = node.node;
+			var fatherNode = _mapper[father];
 
 			foreach (var filePath in Directory.GetFiles(node.path))
 			{
 				var item = InitItem(filePath, false);
-				var chNode = CreateNode(node.node, item);
-				_mapper[chNode] = item;
+				var childNode = new TreeNode(item);
+				fatherNode.AddNode(childNode);
+				var child = CreateNode(father, item);
+				_mapper[child] = childNode;
 			}
 			
 			foreach (var subDirPath in Directory.GetDirectories(node.path))
 			{
 				var item = InitItem(subDirPath, true);
-				var chNode = CreateNode(node.node, item);
-				_mapper[chNode] = item;
-				nodes.Push((chNode, subDirPath));
+				var childNode = new TreeNode(item);
+				fatherNode.AddNode(childNode);
+				var child = CreateNode(father, item);
+				_mapper[child] = childNode;
+				nodes.Push((child, subDirPath));
 			}
 		}
 	}
@@ -85,7 +93,7 @@ public partial class LearnTree : Tree
 		if (string.IsNullOrEmpty(path)) return;
 		Clear();
 		_mapper.Clear();
-		_selectingItems.Clear();
+		_selectingNodes.Clear();
 		
 		TreeItem root = CreateItem();
 		BuildTree(root, path);
diff --git a/Models/TreeNode.cs b/Models/TreeNode.cs
new file mode 100644
index 0000000..ddfc786
--- /dev/null
+++ b/Models/TreeNode.cs
@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+
+namespace Learn.Models;
+
+public class TreeNode(Item item)
+{
+    public TreeNode Parent => _parent;
+    public IEnumerable<TreeNode> Children => _children;
+    public Item Info => item;
+    
+    private TreeNode _parent;
+    private readonly List<TreeNode> _children = new();
+
+    public void AddNode(TreeNode node)
+    {
+        if (_children.Contains(node)) return;
+        _children.Add(node);
+        node._parent = this;
+    }
+}
\ No newline at end of file
diff --git a/Models/TreeNode.cs.uid b/Models/TreeNode.cs.uid
new file mode 100644
index 0000000..28d34d8
--- /dev/null
+++ b/Models/TreeNode.cs.uid
@@ -0,0 +1 @@
+uid://ddqh11wqftpvt