diff --git a/Week02/types_furkan_bulut.py b/Week02/types_furkan_bulut.py
new file mode 100644
index 00000000..e1d127a9
--- /dev/null
+++ b/Week02/types_furkan_bulut.py
@@ -0,0 +1,4 @@
+my_int = 2
+my_float = 1.03
+my_bool = True
+my_complex = 6j
\ No newline at end of file
diff --git a/Week03/pyramid_furkan_bulut.py b/Week03/pyramid_furkan_bulut.py
new file mode 100644
index 00000000..58ef5287
--- /dev/null
+++ b/Week03/pyramid_furkan_bulut.py
@@ -0,0 +1,34 @@
+def calculate_pyramid_height(number_of_blocks):
+    """
+    Calculate the height of a pyramid that can be built with a given number of blocks.
+
+    The function determines how many complete layers (height) can be formed
+    using the provided number of blocks. Each layer requires a number of blocks
+    equal to the layer number (1 block for the first layer, 2 blocks for the
+    second layer, etc.).
+
+    :param number_of_blocks: The total number of blocks available to build the pyramid.
+    :type number_of_blocks: int
+    :return: The maximum height of the pyramid that can be built.
+    :rtype: int
+
+    :raises ValueError: If `number_of_blocks` is less than 0.
+
+    Example:
+
+    calculate_pyramid_height(6)
+    3
+    calculate_pyramid_height(20)
+    5
+    """
+    if number_of_blocks < 0:
+        raise ValueError("Number of blocks must be non-negative.")
+
+    height_of_pyramid = 0
+    block_counter = 0
+
+    while number_of_blocks >= (block_counter + (height_of_pyramid + 1)):
+        block_counter += height_of_pyramid + 1
+        height_of_pyramid += 1
+
+    return height_of_pyramid
diff --git a/Week03/sequences_furkan_bulut.py b/Week03/sequences_furkan_bulut.py
new file mode 100644
index 00000000..954a5f44
--- /dev/null
+++ b/Week03/sequences_furkan_bulut.py
@@ -0,0 +1,17 @@
+def remove_duplicates(seq: list) -> list:
+    """
+    This function removes duplicates from a list.
+    """
+    return list(set(seq))
+
+def list_counts(seq: list) -> dict:
+    """
+    This function counts the number of occurrences of each item in a list.
+    """
+    return {i: seq.count(i) for i in seq}
+
+def reverse_dict(d: dict) -> dict:
+    """
+    This function reverses the keys and values of a dictionary.
+    """
+    return {v: k for k, v in d.items()}
diff --git a/Week04/decorators_furkan_bulut.py b/Week04/decorators_furkan_bulut.py
new file mode 100644
index 00000000..dc887ea9
--- /dev/null
+++ b/Week04/decorators_furkan_bulut.py
@@ -0,0 +1,81 @@
+import time
+import tracemalloc
+
+def performance(fn):
+    """
+    Decorator to measure performance metrics of a function.
+
+    This decorator tracks the execution time and memory usage of the decorated
+    function, printing the results after each call.
+
+    :param fn: The function to be decorated.
+    :returns: A wrapped function that tracks performance metrics.
+    :raises Exception: If an error occurs during the execution of the decorated function.
+    """
+
+    setattr(performance, 'counter', 0)
+    setattr(performance, 'total_time', 0.0)
+    setattr(performance, 'total_mem', 0.0)
+
+    def _performance(*args, **kwargs):
+        """
+        Wrapper function that measures execution time and memory usage.
+
+        :param args: Positional arguments to be passed to the decorated function.
+        :param kwargs: Keyword arguments to be passed to the decorated function.
+        """
+        counter = getattr(performance, 'counter')
+        total_time = getattr(performance, 'total_time')
+        total_mem = getattr(performance, 'total_mem')
+
+        counter += 1
+        setattr(performance, 'counter', counter)
+
+        tracemalloc.start()
+        start_time = time.time()
+
+        try:
+            fn(*args, **kwargs)
+        except Exception as e:
+            print(f"Error occurred: {e}")
+        finally:
+            end_time = time.time()
+            current, peak = tracemalloc.get_traced_memory()
+            tracemalloc.stop()
+
+            elapsed_time = end_time - start_time
+            memory_usage = peak
+
+            total_time += elapsed_time
+            total_mem += memory_usage
+
+            setattr(performance, 'total_time', total_time)
+            setattr(performance, 'total_mem', total_mem)
+
+            print_results(fn.__name__, elapsed_time, memory_usage, counter, total_time, total_mem)
+
+    return _performance
+
+def print_results(func_name, elapsed_time, memory_usage, counter, total_time, total_mem):
+    """
+    Display the performance results of the decorated function.
+
+    This function prints the name of the function being measured, the elapsed time,
+    memory usage, and the total statistics over all calls.
+
+    :param func_name: The name of the function being measured.
+    :param elapsed_time: The time taken for the function to execute, in seconds.
+    :param memory_usage: The peak memory usage during the function execution, in bytes.
+    :param counter: Number of times the decorated function has been called.
+    :param total_time: Total execution time of the decorated function.
+    :param total_mem: Total peak memory usage of the decorated function.
+    """
+    results = (
+        f"Function Name: {func_name}\n"
+        f"Number of Calls: {counter}\n"
+        f"Elapsed Time: {elapsed_time:.6f} seconds\n"
+        f"Memory Usage: {memory_usage / 1024:.2f} KB\n"
+        f"Total Time: {total_time:.6f} seconds\n"
+        f"Total Memory Usage: {total_mem / 1024:.2f} KB\n"
+    )
+    print(results)
diff --git a/Week04/functions_furkan_bulut.py b/Week04/functions_furkan_bulut.py
new file mode 100644
index 00000000..9d776a58
--- /dev/null
+++ b/Week04/functions_furkan_bulut.py
@@ -0,0 +1,86 @@
+custom_power = lambda x=0, /, e=1: x ** e
+
+def custom_equation(x: int = 0, y: int = 0, /, a: int = 1, b: int = 1, *, c: int = 1) -> float:
+    """
+    Calculate a custom equation based on the parameters provided.
+
+    This function computes the result of the equation:
+    (x^a + y^b) / c, where:
+    - `x` and `y` are the bases for exponentiation.
+    - `a` and `b` are the exponents for `x` and `y`, respectively.
+    - `c` serves as the divisor, which cannot be zero.
+
+    :param x:
+        The base for exponentiation (positional only). Default is 0.
+
+    :param y:
+        The base for exponentiation (positional only). Default is 0.
+
+    :param a:
+        The exponent for `x` (positional or keyword). Default is 1.
+        This defines the power to which `x` is raised.
+
+    :param b:
+        The exponent for `y` (positional or keyword). Default is 1.
+        This defines the power to which `y` is raised.
+
+    :param c:
+        A keyword-only parameter representing the divisor. Default is 1.
+        If set to zero, a division by zero exception is raised.
+
+    :raises ValueError:
+        If `c` is zero, a `ValueError` is raised indicating that division by zero
+        is not allowed.
+
+    :returns:
+        The result of the equation (x^a + y^b) / c.
+        This will return a float value representing the computed result.
+
+    :example:
+
+    #>>> custom_equation(2, 3, a=2, b=2, c=1)
+    13.0
+    #>>> custom_equation(2, 3, a=2, b=2, c=0)
+    Traceback (most recent call last):
+        ...
+    ValueError: Division by Zero Exception
+    """
+    if c == 0:
+        raise ValueError("Division by Zero Exception")
+
+    return (x ** a + y ** b) / c
+
+def fn_w_counter() -> (int, dict[str, int]):
+    """
+    A function that counts how many times it has been called and tracks callers.
+
+    Each time this function is invoked, it increments a call counter and logs
+    the name of the caller (the module name). This can be useful for debugging
+    purposes or monitoring how frequently this function is used in different
+    parts of the application.
+
+    :returns:
+        A tuple containing:
+        - The total number of times the function has been called across all instances.
+        - A dictionary mapping caller names (module names) to the number of times
+          they have invoked this function.
+
+    :example:
+
+    #>>> fn_w_counter()
+    (1, {'__main__': 1})
+    #>>> fn_w_counter()
+    (2, {'__main__': 2})
+    """
+    if not hasattr(fn_w_counter, 'call_count'):
+        fn_w_counter.call_count = 0
+        fn_w_counter.callers = {}
+    fn_w_counter.call_count += 1
+
+    caller_name = __name__
+
+    if caller_name in fn_w_counter.callers:
+        fn_w_counter.callers[caller_name] += 1
+    else:
+        fn_w_counter.callers[caller_name] = 1
+    return fn_w_counter.call_count, fn_w_counter.callers