diff --git a/docs/UserGuide.md b/docs/UserGuide.md
index 3b4a8bcb83c..ce5f74f396b 100644
--- a/docs/UserGuide.md
+++ b/docs/UserGuide.md
@@ -40,7 +40,7 @@ RealConnect is a **desktop app for managing contacts, optimized for use via a Co
 
 1. Ensure you have Java `17` or above installed in your Computer.
 
-2. Download the latest `.jar` file from [here](https://github.com/se-edu/addressbook-level3/releases).
+2. Download the latest `.jar` file from [here](https://github.com/AY2425S1-CS2103-F09-2/tp/releases).
 
 3. Copy the file to the folder you want to use as the _home folder_ for your AddressBook.
 
diff --git a/docs/images/Ui.png b/docs/images/Ui.png
index 225872f916b..1d693c89a5a 100644
Binary files a/docs/images/Ui.png and b/docs/images/Ui.png differ
diff --git a/src/main/java/seedu/address/model/person/Flags.java b/src/main/java/seedu/address/model/person/Flags.java
index ab9b34de869..b8b8f2455f2 100644
--- a/src/main/java/seedu/address/model/person/Flags.java
+++ b/src/main/java/seedu/address/model/person/Flags.java
@@ -9,6 +9,7 @@
  * Represent a set of preset labels to each person. Flags enables grouping of persons by multiple criteria in descending
  * significance.
  * Guarantee: Immutable.
+ * Note: this is a utility class for future feature: group by tags. Not used in app version v1.6.
  * */
 public class Flags {
     private Set<PresetFlags> flagSet = new HashSet<>();
diff --git a/src/main/java/seedu/address/ui/HelpWindow.java b/src/main/java/seedu/address/ui/HelpWindow.java
index 3f16b2fcf26..bbf2dc80803 100644
--- a/src/main/java/seedu/address/ui/HelpWindow.java
+++ b/src/main/java/seedu/address/ui/HelpWindow.java
@@ -15,7 +15,7 @@
  */
 public class HelpWindow extends UiPart<Stage> {
 
-    public static final String USERGUIDE_URL = "https://se-education.org/addressbook-level3/UserGuide.html";
+    public static final String USERGUIDE_URL = "https://ay2425s1-cs2103-f09-2.github.io/tp/UserGuide.html";
     public static final String HELP_MESSAGE = "Refer to the user guide: " + USERGUIDE_URL;
 
     private static final Logger logger = LogsCenter.getLogger(HelpWindow.class);
diff --git a/src/test/java/seedu/address/logic/parser/ParserUtilTest.java b/src/test/java/seedu/address/logic/parser/ParserUtilTest.java
index d8108840298..ee910d7529b 100644
--- a/src/test/java/seedu/address/logic/parser/ParserUtilTest.java
+++ b/src/test/java/seedu/address/logic/parser/ParserUtilTest.java
@@ -208,6 +208,26 @@ public void parseDate_invalidDateFormat_throwsDateTimeException() throws ParseEx
         assertThrows(ParseException.class, () -> ParserUtil.parseDate(INVALID_DATE_STRING));
     }
 
+    @Test
+    public void parseInteger_validIntegerWithoutWhitespace_returnsInteger() throws Exception {
+        assertEquals(123, ParserUtil.parseInteger("123"));
+    }
+
+    @Test
+    public void parseInteger_validIntegerWithWhitespace_returnsTrimmedInteger() throws Exception {
+        assertEquals(123, ParserUtil.parseInteger("   123   "));
+    }
+
+    @Test
+    public void parseInteger_invalidInteger_throwsParseException() {
+        assertThrows(ParseException.class, () -> ParserUtil.parseInteger("123abc"));
+    }
+
+    @Test
+    public void parseInteger_nullInput_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> ParserUtil.parseInteger(null));
+    }
+
     @Test
     public void parseBirthday_invalidDateFormat_throwsDateTimeException() throws ParseException {
         assertThrows(ParseException.class, () -> ParserUtil.parseBirthday(INVALID_DATE_STRING));
diff --git a/src/test/java/seedu/address/model/person/FlagsTest.java b/src/test/java/seedu/address/model/person/FlagsTest.java
index dc802e781ec..86e7bf37c16 100644
--- a/src/test/java/seedu/address/model/person/FlagsTest.java
+++ b/src/test/java/seedu/address/model/person/FlagsTest.java
@@ -45,7 +45,6 @@ public void testGetNumberOfMatchingFlags() {
         testFlags.add(PresetFlags.ARCHIVED);
 
         assertEquals(2, flags.getNumberOfMatchingFlags(testFlags));
-
         // Test with a set containing no matching flags.
         testFlags.clear();
         testFlags.add(PresetFlags.BUYER);
@@ -59,7 +58,7 @@ public void testGetWeightedFlags() {
         Flags flags = new Flags(PresetFlags.FAVOURITE, PresetFlags.BUYER, PresetFlags.SELLER);
 
         // Test weight calculation for matching flags.
-        // Assuming the weight is calculated as 2^index in reverse order:
+        // The weight is calculated as 2^index in reverse order:
         // FAVOURITE: index 0 -> 2^0 = 1
         // ARCHIVED: index 1 -> 2^1 = 2
         // BUYER: index 2 -> 2^2 = 4
@@ -85,7 +84,6 @@ public void testEmptyFlags() {
                 PresetFlags.ARCHIVED, PresetFlags.BUYER, PresetFlags.SELLER));
         assertEquals(0, emptyFlags.getNumberOfMatchingFlags(new HashSet<>()));
 
-        // Ensure that no flags are present.
         assertEquals(0, emptyFlags.flagIsPresent(PresetFlags.FAVOURITE));
         assertEquals(0, emptyFlags.flagIsPresent(PresetFlags.ARCHIVED));
     }