diff --git a/ftx.py b/ftx.py
index 4891a1e..b1f1414 100644
--- a/ftx.py
+++ b/ftx.py
@@ -303,11 +303,12 @@ async def open_orders(self, market):
         return results
 
     async def order_history(
-            self, market, start_time=None, end_time=None, limit=None
+            self, market, side=None, start_time=None, end_time=None, limit=None
             ):
         """
 
         :param market: str
+        :param side: str
         :param start_time: int
         :param end_time: int
         :param limit: int # max 5000
@@ -317,6 +318,8 @@ async def order_history(
         params = {
                 'market': market
                 }
+        if side is not None:
+            params['side'] = side
         if limit is not None:
             params['limit'] = limit
         if start_time is not None:
@@ -444,7 +447,7 @@ async def place_trigger_order(
         results = await self._requests('post', path, params)
         return results
 
-    async def order_stats(self, order_id):
+    async def order_status(self, order_id):
         path = f'/orders/{order_id}'
         results = await self._requests('get', path)
         return results
@@ -705,7 +708,7 @@ async def ws(self, subscribe, channel_name, market_name):
 
         :param subscribe: str # subscribe, unsubscribe
         :param channel_name: str # orderbook, trades, ticker
-        :param market_name: str # e.g.)BTC-PERP
+        :param market_name: str # e.g. BTC-PERP
         :return:
         """
         params = {
diff --git a/methods.py b/methods.py
new file mode 100644
index 0000000..1ae638d
--- /dev/null
+++ b/methods.py
@@ -0,0 +1,37 @@
+from FTXwraper.ftx import FTX
+
+
+class FTXMethods(FTX):
+    def __init__(self, account_name, api_file=None):
+        super().__init__(account_name, api_file)
+
+    async def authentication(self):
+        res = await self.account_information()
+        return res['success']
+
+    async def get_price(self, market: str, side: str) -> float:
+        res = await self.market()
+        for _ in res:
+            if _['name'] == market:
+                if side == 'buy' or side == 'long':
+                    return _['ask']
+                elif side == 'sell' or side == 'short':
+                    return _['bid']
+                else:
+                    raise ValueError('side is wrong')
+
+    async def get_position(self, market: str) -> float:
+        res = await self.positions()
+        for _ in res:
+            if _['future'] == market:
+                return _['netSize']
+        else:
+            return 0
+
+    async def get_free_balance(self, market):
+        balance = await self.balances()
+        for _ in balance:
+            if _['coin'] == market:
+                return _['free'], _['usdValue']
+            else:
+                return 0, 0