I added the my notes on the week 3 homework in a .txt file

build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id "java"
-    id "edu.wpi.first.GradleRIO" version "2025.2.1"
+    id "edu.wpi.first.GradleRIO" version "2025.3.2"
     id 'com.diffplug.spotless' version '6.20.0'
 }
 

src/main/java/frc/robot/subsystems/ArmSubsystem.java

@@ -1 +1 @@
-// Homework for Week 2
+// Homework for Week 2

src/main/java/frc/robot/subsystems/SoftwareWeek3HomeworkNotes.txt

@@ -0,0 +1,11 @@
+A subsystem a group of code for a multiple pieces of hardware that work together
+It is important to restrict access to a subsystem to prevent problems
+It is easy to use subsystems using CommandSchedular
+Subsystems are for controlling basic functions. Commands put this together to do more complicated things
+All subsystems have a lot of basic things in common so its good to put them all in a parent class
+Whenever doing an action on a piece of hardware, always do it through the subsystem that contains it
+
+Periodic() method is what the code runs periodically every cycle. This is for housekeeping tasks. The method is optional.
+Never control motors from the periodic method.
+
+Subsystems only do one thing at a time.