diff --git a/README.md b/README.md
index 536c7e3..fd49800 100644
--- a/README.md
+++ b/README.md
@@ -21,14 +21,32 @@ py-aps is a Python SDK that provides a simple and intuitive interface for intera
 ## Quick Start
 
 ```python
-from pyaps import auth
-
-# Coming soon - SDK implementation in progress
+from pyaps.auth import AuthClient, Scopes
+
+# 2-legged OAuth
+client = AuthClient(client_id="...", client_secret="...")
+token = client.two_legged.get_token([Scopes.DATA_READ])
+
+# 3-legged OAuth with PKCE
+verifier, challenge = client.three_legged.generate_pkce_pair()
+auth_url = client.three_legged.build_authorize_url(
+    scopes=[Scopes.DATA_READ, Scopes.USER_PROFILE_READ],
+    code_challenge=challenge
+)
+# After user authorizes: token = client.three_legged.exchange_code(code, code_verifier=verifier)
 ```
 
+For more examples, see `src/pyaps/auth/example.py`.
+
 ## Project Status
 
-This package is currently in early development (v0.0.1). The package name has been reserved on PyPI, and active development is underway by **voidbox**.
+**Current version: v0.0.2** - Authentication API support added
+
+This package is currently in early development. Active development is underway by **voidbox**.
+
+### Version History
+- **v0.0.2** - Added OAuth 2.0 authentication client with 2-legged/3-legged flows, PKCE support, and token management
+- **v0.0.1** - Initial package release (placeholder)
 
 ## Contributing
 
diff --git a/pyproject.toml b/pyproject.toml
index 9fc236d..65ab88c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "py-aps"
-version = "0.0.1"
+version = "0.0.2"
 description = "Autodesk Platform Service APIs Python SDK"
 readme = "README.md"
 requires-python = ">=3.9"
diff --git a/src/pyaps/__init__.py b/src/pyaps/__init__.py
index 35df940..f86115a 100644
--- a/src/pyaps/__init__.py
+++ b/src/pyaps/__init__.py
@@ -1,8 +1,9 @@
 # src/pyaps/__init__.py
-from . import auth, automation, datamanagement
+from . import auth, automation, datamanagement, http
 
 __all__ = [
     "auth",
     "automation",
-    "datamanagement"
+    "datamanagement",
+    "http",
 ]
\ No newline at end of file
diff --git a/src/pyaps/auth/__init__.py b/src/pyaps/auth/__init__.py
index e69de29..2ace60a 100644
--- a/src/pyaps/auth/__init__.py
+++ b/src/pyaps/auth/__init__.py
@@ -0,0 +1,11 @@
+# src/pyaps/auth/__init__.py
+from .client import AuthClient, Scopes
+from .token_store import OAuth2Token, TokenStore, InMemoryTokenStore
+
+__all__ = [
+    "AuthClient",
+    "Scopes",
+    "OAuth2Token",
+    "TokenStore",
+    "InMemoryTokenStore",
+]
diff --git a/src/pyaps/http/__init__.py b/src/pyaps/http/__init__.py
index e69de29..7f92c53 100644
--- a/src/pyaps/http/__init__.py
+++ b/src/pyaps/http/__init__.py
@@ -0,0 +1,7 @@
+# src/pyaps/http/__init__.py
+from .client import HTTPClient, HTTPError
+
+__all__ = [
+    "HTTPClient",
+    "HTTPError",
+]