diff --git a/3/3.10 Tweet Decoder/tweet_decoder/main.py b/3/3.10 Tweet Decoder/tweet_decoder/main.py
new file mode 100644
index 0000000..d1e9d5c
--- /dev/null
+++ b/3/3.10 Tweet Decoder/tweet_decoder/main.py	
@@ -0,0 +1,13 @@
+tweet = input('Enter abbreviation from tweet:\n')
+
+tweet_dict = {
+    'LOL': 'LOL = laughing out loud',
+    'BFN': 'BFN = bye for now',
+    'FTW': 'FTW = for the win',
+    'IRL': 'IRL = in real life'
+}
+
+try:
+    print(tweet_dict[tweet.upper()])
+except KeyError:
+    print("Sorry, don't know that one")
diff --git a/3/3.11 Smallest Number/smallest_number/main.py b/3/3.11 Smallest Number/smallest_number/main.py
new file mode 100644
index 0000000..578bbf9
--- /dev/null
+++ b/3/3.11 Smallest Number/smallest_number/main.py	
@@ -0,0 +1,16 @@
+
+def get_input():
+    result = []
+    print('Enter a number when prompted. Press enter to stop')
+    while True:
+        _input = input('Input a number: ')
+        if len(_input) == 0:
+            break
+        try:
+            _input = int(_input)
+            result.append(_input)
+        except ValueError:
+            print("Error, only accepts numbers")
+    return result
+
+print(min(get_input()))
diff --git a/3/3.12 Seasons/seasons/main.py b/3/3.12 Seasons/seasons/main.py
new file mode 100644
index 0000000..3e0c082
--- /dev/null
+++ b/3/3.12 Seasons/seasons/main.py	
@@ -0,0 +1,53 @@
+from datetime import datetime
+import logging
+
+logging.basicConfig(level=logging.ERROR)
+
+input_month = input('Input a month to analyse: ')
+input_day = int(input('Input a day of that month: '))
+
+def convert_doy_to_season(doy):
+    if not isinstance(doy, int):
+        return 'Invalid'
+
+    if 79 <= doy <= 171:
+        return 'Spring'
+    if 172 <= doy <= 264:
+        return 'Summer'
+    if 265 <= doy <= 354:
+        return 'Autumn'
+    if 355 <= doy <= 365 or 1 <= doy <= 78:
+        return 'Winter'
+
+def convert_month_to_num(month_name):
+    try:
+        _date = datetime.strptime(month_name, "%B")
+        logging.debug(_date.month)
+        return int(_date.month)
+    except ValueError:
+        logging.warning('Was unable to convert from full month name, trying with shortname.')
+    try:
+        _date = datetime.strptime(month_name, "%b")
+        logging.debug(_date.month)
+        return int(_date.month)
+    except ValueError:
+        logging.error('Was unable to convert the month {0}! Tried long name and short name.'.format(month_name))
+        return None
+
+def day_of_year(month,day):
+    try:
+        # Cannot handle leap years!!!
+        if day > 30 or day <= 0:
+            raise OverflowError
+
+        result = int((275 * month) / 9.0) - 2 * int((month + 9) / 12.0) + day - 30
+        logging.debug(result)
+        return result
+    except TypeError:
+        return None
+    except OverflowError:
+        return None
+
+
+print(convert_doy_to_season(day_of_year(convert_month_to_num(input_month), input_day)))
+
diff --git a/3/3.13 Exact Change/exact_change/main.py b/3/3.13 Exact Change/exact_change/main.py
new file mode 100644
index 0000000..db6aa11
--- /dev/null
+++ b/3/3.13 Exact Change/exact_change/main.py	
@@ -0,0 +1,40 @@
+try:
+    user_cents = int(input('Cents: '))
+except ValueError:
+    print('Cannot cannot parse input.')
+    exit()
+
+change = []
+coins = [
+    ['Dollars', 'Dollar'],
+    ['Quarters', 'Quarter'],
+    ['Dimes', 'Dime'],
+    ['Nickels', 'Nickel'],
+    ['Pennies', 'Penny']]
+
+while user_cents >= 100:
+    user_cents -= 100
+    change.append(coins[0])
+while user_cents >= 25:
+    user_cents -= 25
+    change.append(coins[1])
+while user_cents >= 10:
+    user_cents -= 10
+    change.append(coins[2])
+while user_cents >= 5:
+    user_cents -= 5
+    change.append(coins[3])
+for _i in range(user_cents):
+    change.append(coins[4])
+
+if len(change) != 0:
+    for coin in coins:
+        num_coins = change.count(coin)
+        if num_coins != 0:
+            if num_coins > 1:
+                print('{0} {1}'.format(num_coins, coin[0]))
+            else:
+                print('{0} {1}'.format(num_coins, coin[1]))
+else:
+    print('No change ')
+