diff --git a/README.md b/README.md
index 417166f..66cd613 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,42 @@
 # StarRailRes-Python
 
 A python library for StarRailRes.
+
+## Installation
+
+```bash
+pip install starrailres
+```
+
+## Usage
+
+```python
+from pathlib import Path
+from starrailres import CharacterBasicInfo, Index, LevelInfo
+
+# replace with index folder
+index = Index(Path("index") / "en")
+
+basic = CharacterBasicInfo(
+    id="1102",
+    rank=0,
+    level=70,
+    promotion=5,
+    skill_tree_levels=[
+        LevelInfo(id="1102001", level=2),
+        LevelInfo(id="1102002", level=5),
+        LevelInfo(id="1102003", level=6),
+        LevelInfo(id="1102004", level=5),
+        LevelInfo(id="1102007", level=1),
+        LevelInfo(id="1102101", level=1),
+        LevelInfo(id="1102102", level=1),
+        LevelInfo(id="1102201", level=1),
+        LevelInfo(id="1102202", level=1),
+    ],
+)
+
+character = index.get_character_info(basic)
+print(character)
+```
+
+For more examples, see `examples`.
diff --git a/poetry.lock b/poetry.lock
index 1c22ac0..d78952b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -189,14 +189,14 @@ files = [
 
 [[package]]
 name = "typing-extensions"
-version = "4.6.0"
+version = "4.6.2"
 description = "Backported and Experimental Type Hints for Python 3.7+"
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "typing_extensions-4.6.0-py3-none-any.whl", hash = "sha256:6ad00b63f849b7dcc313b70b6b304ed67b2b2963b3098a33efe18056b1a9a223"},
-    {file = "typing_extensions-4.6.0.tar.gz", hash = "sha256:ff6b238610c747e44c268aa4bb23c8c735d665a63726df3f9431ce707f2aa768"},
+    {file = "typing_extensions-4.6.2-py3-none-any.whl", hash = "sha256:3a8b36f13dd5fdc5d1b16fe317f5668545de77fa0b8e02006381fd49d731ab98"},
+    {file = "typing_extensions-4.6.2.tar.gz", hash = "sha256:06006244c70ac8ee83fa8282cb188f697b8db25bc8b4df07be1873c43897060c"},
 ]
 
 [metadata]
diff --git a/pyproject.toml b/pyproject.toml
index 5b3373b..7500e53 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "starrailres"
-version = "0.0.1"
+version = "1.0.0"
 description = "StarRailRes index package."
 authors = ["mobyw <mobyw66@gmail.com>"]
 license = "MIT"
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..1abde55
Binary files /dev/null and b/requirements.txt differ