diff --git a/code/src/week_2/task_1.rs b/code/src/week_2/task_1.rs
index f47db00..057c945 100644
--- a/code/src/week_2/task_1.rs
+++ b/code/src/week_2/task_1.rs
@@ -1,11 +1,14 @@
+// Demonstrates functions, return types, and expression blocks
 
+// Function that converts BTC to USD
 fn btc_value_in_usd(btc: f64, rate: f64) -> f64 {
-    btc * rate 
+    // The expression below returns btc * rate without using 'return' or a semicolon
+    btc * rate
 }
-//main run main
+
 fn main() {
-    let btc = 0.25; //a dream amount
-    let rate = 65_000.0; // example rate here 
+    let btc = 0.05;
+    let rate = 68_000.0; // Example: 1 BTC = $68,000
     let value = btc_value_in_usd(btc, rate);
     println!("{} BTC is worth ${} USD", btc, value);
 }
diff --git a/code/src/week_2/task_2.rs b/code/src/week_2/task_2.rs
index aca8ad6..83ea422 100644
--- a/code/src/week_2/task_2.rs
+++ b/code/src/week_2/task_2.rs
@@ -1,18 +1,25 @@
+
+// Demonstrates control flow, for loops, while loops, and conditionals
+
 fn mine_blocks(limit: u8) {
     let mut difficulty = 1;
 
     for height in 1..=limit {
-        println!("Mining block #{}", height);
+        println!("Mining block #{} at difficulty {}", height, difficulty);
 
-        // Simulate difficulty
-        while difficulty < 3 {
-            println!("Simulating difficulty level {}", difficulty);
-            difficulty += 1; // the number of starting zero's
+        // Every 5 blocks, simulate a checkpoint
+        if height % 5 == 0 {
+            println!("Checkpoint reached at block #{}", height);
         }
 
-        if height % 5 == 0 {
-            println!("Checkpoint reached");
+        // Simulate difficulty increase using a while loop
+        let mut work_done = 0;
+        while work_done < difficulty {
+            println!("Performing mining work... (step {})", work_done + 1);
+            work_done += 1;
         }
+
+        difficulty += 1; // Increase difficulty for next round
     }
 }
 
diff --git a/code/src/week_2/task_3.rs b/code/src/week_2/task_3.rs
index 0b0b29a..ea2b41d 100644
--- a/code/src/week_2/task_3.rs
+++ b/code/src/week_2/task_3.rs
@@ -1,36 +1,32 @@
+
+// Demonstrates enums, match statements, and returning string slices
+
 enum Network {
     Mainnet,
     Testnet,
     Regtest,
 }
 
-fn get_rpc_url(network: &Network) -> &str {
+// Function that prints network details using match
+fn print_network_info(network: &Network) {
     match network {
-        Network::Mainnet => "https://mainnet.example.com",
-        Network::Testnet => "https://testnet.example.com",
-        Network::Regtest => "http://localhost:8332",
+        Network::Mainnet => println!("You are connected to Bitcoin Mainnet "),
+        Network::Testnet => println!("You are connected to Bitcoin Testnet "),
+        Network::Regtest => println!("You are connected to Bitcoin Regtest "),
     }
 }
 
-fn print_network_details(network: &Network) {
+// Function that returns an RPC URL for each network
+fn get_rpc_url(network: &Network) -> &str {
     match network {
-        Network::Mainnet => println!("This is the main Bitcoin network."),
-        Network::Testnet => println!("This is the test Bitcoin network."),
-        Network::Regtest => println!("This is the regtest Bitcoin network."),
+        Network::Mainnet => "https://mainnet.bitcoin.org/rpc",
+        Network::Testnet => "https://testnet.bitcoin.org/rpc",
+        Network::Regtest => "http://localhost:18443",
     }
 }
 
 fn main() {
-    let network = Network::Regtest;
-
-    print_network_details(&network);
-    println!("RPC URL: {}", get_rpc_url(&network));
-    let network = Network::Mainnet;
-
-    print_network_details(&network);
-    println!("RPC URL: {}", get_rpc_url(&network));
     let network = Network::Testnet;
-
-    print_network_details(&network);
+    print_network_info(&network);
     println!("RPC URL: {}", get_rpc_url(&network));
 }