diff --git a/SzCli/LocalFileManager.cs b/SzCli/LocalFileManager.cs
index ae5827e..f0c7d24 100644
--- a/SzCli/LocalFileManager.cs
+++ b/SzCli/LocalFileManager.cs
@@ -1,4 +1,6 @@
+using System.Reflection.Metadata;
 using SzLib;
+using SzLib.DataObjects;
 
 namespace SzCli;
 
@@ -18,10 +20,16 @@ public class LocalFileManager : ISzFileManager
         }
     }
 
+    public string DatasetsPath => Path.Combine(DataPath, "datasets");
+
     public bool SaveFile(string path, string fileContent)
     {
         try
         {
+            var dir = Path.GetDirectoryName(path);
+            if (dir is null) return false;
+            Directory.CreateDirectory(dir);
+            
             File.WriteAllText(path, fileContent);
             return true;
         }
@@ -31,4 +39,17 @@ public class LocalFileManager : ISzFileManager
             return false;
         }
     }
-}
\ No newline at end of file
+
+    public string? LoadFile(string path)
+    {
+        try
+        {
+            return File.ReadAllText(path);
+        }
+        catch (Exception e)
+        {
+            Console.WriteLine($"Error saving file: {e.Message}");
+            return null; 
+        }
+    }
+}
diff --git a/SzCli/Program.cs b/SzCli/Program.cs
index 9375ebb..5e2e612 100644
--- a/SzCli/Program.cs
+++ b/SzCli/Program.cs
@@ -19,8 +19,8 @@ public class Program
         
         Console.WriteLine("Attempting to load dataset...");
         var loadedDataset = parser.LoadDataset(dataset.Id);
-        Console.WriteLine($"Successfully loaded dataset? {loadedDataset != null}. Id is {loadedDataset.Id}");
+        Console.WriteLine($"Successfully loaded dataset? {loadedDataset != null}. Id is {loadedDataset?.Id}");
         
-        Console.WriteLine(loadedDataset.DataObjects["test"].Fields["value"].Value);
+        Console.WriteLine(loadedDataset?.DataObjects["test"].Fields["value"].Value);
     }
 }
\ No newline at end of file
diff --git a/SzLib/Class1.cs b/SzLib/Class1.cs
deleted file mode 100644
index 782cceb..0000000
--- a/SzLib/Class1.cs
+++ /dev/null
@@ -1,6 +0,0 @@
-namespace SzLib;
-
-public class Class1
-{
-
-}
diff --git a/SzLib/ISzFileManager.cs b/SzLib/ISzFileManager.cs
index 64ea745..17b08e4 100644
--- a/SzLib/ISzFileManager.cs
+++ b/SzLib/ISzFileManager.cs
@@ -1,8 +1,12 @@
+using SzLib.DataObjects;
+
 namespace SzLib;
 
 public interface ISzFileManager 
-{
+{ 
     public string DataPath {get;}
-
+    public string DatasetsPath {get;}
+    
     public bool SaveFile(string path, string fileContent);
-}
\ No newline at end of file
+    public string? LoadFile(string path);
+}
diff --git a/SzLib/SzParser.cs b/SzLib/SzParser.cs
index 02a2ff6..b0642df 100644
--- a/SzLib/SzParser.cs
+++ b/SzLib/SzParser.cs
@@ -35,13 +35,12 @@ public class SzParser(ISzFileManager szFileManager)
 
     public bool SaveDataset(SzDataset dataset)
     {
-        var datasetDir = Path.Combine(szFileManager.DataPath, "datasets", dataset.Id);
-        Directory.CreateDirectory(datasetDir);
+        var datasetDir = Path.Combine(szFileManager.DatasetsPath, dataset.Id);
+
         try
         {
             var json = SerializeDatasetToJson(dataset);
-            File.WriteAllText(Path.Combine(datasetDir, "dataset.json"), json);
-            return true;
+            return szFileManager.SaveFile(Path.Combine(datasetDir, "dataset.json"), json);
         }
         catch (Exception e)
         {
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..cb64eaa
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,14 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  
+  nativeBuildInputs = with pkgs; [
+    dotnet-sdk
+    omnisharp-roslyn
+  ];
+  
+  shellHook = ''
+    echo "// SESSION ZERO DEV SHELL //"
+  '';
+}
+