diff --git a/README.md b/README.md
index ce9625c..5b17492 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,38 @@
 # go-holidayapi
-Official Go library for Holiday API
+Official Go library for [Holiday API](https://holidayapi.com)
+
+## Usage
+
+```go
+package main
+
+import (
+    "fmt"
+    "github.com/joshtronic/go-holidayapi"
+)
+
+func main() {
+    hapi := holidayapi.NewV1("_MY_API_KEY_")
+
+    holidays, err := hapi.Holidays(map[string]interface{}{
+        // Required
+        "country": "US",
+        "year":    "2016",
+        // Optional
+        // "month":    "7",
+        // "day":      "4",
+        // "previous": "true",
+        // "upcoming": "true",
+        // "public":   "true",
+        // "pretty":   "true",
+    })
+
+    if err != nil {
+        // Error handling...
+    }
+
+    fmt.Println("%#v\n", holidays)
+}
+
+```
+
diff --git a/holidayapi.go b/holidayapi.go
index 9582f0b..4230179 100644
--- a/holidayapi.go
+++ b/holidayapi.go
@@ -1,36 +1,62 @@
-//package holidayapi
-package main
+package holidayapi
 
-import "fmt"
-
-// TODO: import ( encoding/json net/http net/url )
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+)
 
 type V1 struct {
+	Url string
 	Key string
 }
 
 func NewV1(key string) *V1 {
 	v1 := &V1{
 		Key: key,
+		Url: "https://holidayapi.com/v1/holidays?",
 	}
 
 	return v1
 }
 
-func (v1 *V1) Holidays(parameters map[string]interface{}) map[string]interface{} {
-	return map[string]interface{}{
-		"test": "ing",
+func (v1 *V1) Holidays(args map[string]interface{}) (map[string]interface{}, error) {
+	var data map[string]interface{}
+
+	if _, ok := args["key"]; !ok {
+		args["key"] = v1.Key
 	}
-}
-
-func main() {
-	hapi := NewV1("_MY_API_KEY_")
-
-	fmt.Println(hapi.Key)
-
-	holidays := hapi.Holidays(map[string]interface{}{
-		"country": "US",
-	})
-
-	fmt.Println("%#v\n", holidays)
+
+	params := url.Values{}
+
+	for k, v := range args {
+		params.Add(k, v.(string))
+	}
+
+	resp, err := http.Get(v1.Url + params.Encode())
+
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+
+	if err != nil {
+		return nil, err
+	}
+
+	json.Unmarshal([]byte(string(body)), &data)
+
+	if resp.StatusCode != 200 {
+		_, ok := data["error"]
+
+		if !ok {
+			data["error"] = "Unknown error."
+		}
+	}
+
+	return data, nil
 }