diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..ee77193
Binary files /dev/null and b/.DS_Store differ
diff --git a/.gitignore b/.gitignore
index ea8c4bf..0b745e2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /target
+.env
\ No newline at end of file
diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..bfe544f
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,16 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "type": "shell",
+            "label": "Package and Upload Documentation",
+            "command": "source ./.env && CRATE_NAME=$(cargo metadata --no-deps --format-version 1 | jq -r '.packages[0].name') && CRATE_VERSION=$(cargo metadata --no-deps --format-version 1 | jq -r '.packages[0].version') && cargo doc --no-deps && cd ./target && zip -r doc.zip ./doc && curl -v -H \"Authorization: ${KELLNR_TOKEN}\" https://crates.esteil.dedyn.io/api/v1/docs/$CRATE_NAME/$CRATE_VERSION --upload-file ./doc.zip",
+            "args": [],
+            "problemMatcher": [],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        }
+    ]
+}
\ No newline at end of file
diff --git a/src/countries/mod.rs b/src/countries/mod.rs
index 2221e51..766cd12 100644
--- a/src/countries/mod.rs
+++ b/src/countries/mod.rs
@@ -17,10 +17,24 @@ where
     fn new() -> (String, Vec<Holiday>);
 }
 
+/// Represents country codes for holiday calculations
+///
+/// # Variants
+/// * `DE` - Germany
+/// * `US` - United States
+/// * `FR` - France
+///
+/// # Purpose
+/// Provides a type-safe way to specify countries for holiday-related operations
 #[derive(Debug, Clone, Copy, Hash, PartialEq, Eq)]
 pub enum CountryCode {
+    /// Germany
     DE,
+
+    /// The United States
     US,
+
+    /// France
     FR,
 }
 
diff --git a/src/holiday.rs b/src/holiday.rs
index b39e268..9445f3e 100644
--- a/src/holiday.rs
+++ b/src/holiday.rs
@@ -75,12 +75,6 @@ impl Holiday {
     }
 }
 
-#[derive(Debug, Clone)]
-pub struct HolidayDate {
-    pub name: String,
-    pub date: Date,
-}
-
 #[cfg(test)]
 mod test {
     use crate::holiday::Activity;
diff --git a/src/lib.rs b/src/lib.rs
index b080279..41a0dc5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,21 +1,28 @@
 use std::collections::HashMap;
 
-use time::Date;
+pub use time::Date;
 
-use crate::{
-    countries::CountryCode,
-    holiday::{HDate, Holiday, HolidayDate},
-};
+use crate::holiday::{HDate, Holiday};
 
 mod countries;
 mod holiday;
 pub(crate) mod utils;
 
+pub use countries::CountryCode;
+
+/// A struct to manage and check holidays for different countries
 pub struct HolidayChecker {
     countries: HashMap<CountryCode, (String, Vec<Holiday>)>,
 }
 
 impl HolidayChecker {
+    /// Creates a new HolidayChecker with holidays for specified countries
+    ///
+    /// # Arguments
+    /// * `countries` - A vector of country codes to initialize holidays for
+    ///
+    /// # Returns
+    /// A new HolidayChecker instance with holidays for the specified countries
     pub fn new(countries: Vec<CountryCode>) -> Self {
         let mut map = HashMap::new();
 
@@ -27,6 +34,15 @@ impl HolidayChecker {
         Self { countries: map }
     }
 
+    /// Retrieves a list of holidays for a specific country, state, and year
+    ///
+    /// # Arguments
+    /// * `country` - The country code
+    /// * `state` - The specific state within the country
+    /// * `year` - The year to retrieve holidays for
+    ///
+    /// # Returns
+    /// A vector of HolidayDate for the specified country, state, and year
     pub fn holiday_list(&self, country: CountryCode, state: &str, year: i32) -> Vec<HolidayDate> {
         Self::get_years_holidays(
             self.countries
@@ -37,6 +53,15 @@ impl HolidayChecker {
         )
     }
 
+    /// Counts the number of holidays for a specific country, state, and year
+    ///
+    /// # Arguments
+    /// * `country` - The country code
+    /// * `state` - The specific state within the country
+    /// * `year` - The year to count holidays for
+    ///
+    /// # Returns
+    /// The number of holidays for the specified country, state, and year
     pub fn number_of_holidays(&self, country: CountryCode, state: &str, year: i32) -> usize {
         Self::get_years_holidays(
             self.countries
@@ -48,6 +73,16 @@ impl HolidayChecker {
         .len()
     }
 
+    /// Checks if a specific date is a holiday for a given country, state, and year
+    ///
+    /// # Arguments
+    /// * `country` - The country code
+    /// * `state` - The specific state within the country
+    /// * `year` - The year to check
+    /// * `date` - The specific date to check
+    ///
+    /// # Returns
+    /// An Option containing the HolidayDate if the date is a holiday, None otherwise
     pub fn is_holiday(
         &self,
         country: CountryCode,
@@ -70,6 +105,15 @@ impl HolidayChecker {
         })
     }
 
+    /// Internal method to retrieve holidays for a specific year and state
+    ///
+    /// # Arguments
+    /// * `holidays` - A tuple containing all states identifier and list of holidays
+    /// * `year` - The year to retrieve holidays for
+    /// * `state` - The specific state to filter holidays
+    ///
+    /// # Returns
+    /// A vector of HolidayDate for the specified year and state
     fn get_years_holidays(
         holidays: &(String, Vec<Holiday>),
         year: i32,
@@ -103,3 +147,25 @@ impl HolidayChecker {
             .collect()
     }
 }
+
+/// Represents a specific holiday with its name and date
+///
+/// # Fields
+/// * `name` - The name of the holiday (e.g., "Christmas", "Independence Day")
+/// * `date` - The specific date when the holiday occurs
+///
+/// # Examples
+/// ```rust
+/// let christmas = HolidayDate {
+///     name: String::from("Christmas"),
+///     date: Date::from_calendar_date(2023, Month::December, 25).unwrap()
+/// };
+/// ```
+#[derive(Debug, Clone)]
+pub struct HolidayDate {
+    /// The name of the holiday
+    pub name: String,
+
+    /// The date when the holiday is celebrated
+    pub date: Date,
+}