diff --git a/README.md b/README.md
index c5d399e0..0fd6cd7f 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ This will install Rustlings and give you access to the `rustlings` command. Run
 
 ## Windows
 
-First, set `ExecutionPolicy` to `RemoteSigned`:
+In PowerShell, set `ExecutionPolicy` to `RemoteSigned`:
 
 ```ps
 Set-ExecutionPolicy RemoteSigned
diff --git a/exercises/generics/generics3.rs b/exercises/generics/generics3.rs
index cd3232a4..c76425c3 100644
--- a/exercises/generics/generics3.rs
+++ b/exercises/generics/generics3.rs
@@ -1,10 +1,11 @@
-// An imaginary magical school has a new report card generation system written in rust!
+// An imaginary magical school has a new report card generation system written in Rust!
 // Currently the system only supports creating report cards where the student's grade 
-// is represented numerically (e.g. 1.0 -> 5.5). However, the school also issues alphabetical grades
-// (A+ -> F-) and needs to be able to print both types of report card!
+// is represented numerically (e.g. 1.0 -> 5.5). 
+// However, the school also issues alphabetical grades (A+ -> F-) and needs 
+// to be able to print both types of report card!
 
-// Make the necessary code changes to support alphabetical report cards, thereby making the second
-// test pass.
+// Make the necessary code changes to support alphabetical report cards, thereby making 
+// the second test pass.
 
 // I AM NOT DONE
 pub struct ReportCard {
@@ -15,7 +16,8 @@ pub struct ReportCard {
 
 impl ReportCard {
     pub fn print(&self) -> String {
-        format!("{} ({}) - achieved a grade of {}", &self.student_name, &self.student_age, &self.grade)
+        format!("{} ({}) - achieved a grade of {}", 
+            &self.student_name, &self.student_age, &self.grade)
     }
 }
 
diff --git a/exercises/option/option1.rs b/exercises/option/option1.rs
index 40cf2fe7..1c3ddab7 100644
--- a/exercises/option/option1.rs
+++ b/exercises/option/option1.rs
@@ -15,7 +15,7 @@ fn main() {
     ];
     for iter in 0..5 {
         let number_to_add: u16 = {
-            ((iter * 5) + 2) / (4 * 16)
+            ((iter * 1235) + 2) / (4 * 16)
         };
 
         numbers[iter as usize] = Option::Some(number_to_add);
diff --git a/exercises/variables/variables3.rs b/exercises/variables/variables3.rs
index 2bd4d3c2..7d84709d 100644
--- a/exercises/variables/variables3.rs
+++ b/exercises/variables/variables3.rs
@@ -4,6 +4,6 @@
 fn main() {
     let mut x = 3;
     println!("Number {}", x);
-    x = 5;
+    x = 5; // don't change this line
     println!("Number {}", x);
 }
diff --git a/exercises/variables/variables5.rs b/exercises/variables/variables5.rs
index 64cebb72..b87d5019 100644
--- a/exercises/variables/variables5.rs
+++ b/exercises/variables/variables5.rs
@@ -2,7 +2,7 @@
 // Make me compile! Execute the command `rustlings hint variables5` if you want a hint :)
 
 fn main() {
-    let number = "3";
+    let number = "3"; // don't change this line
     println!("Number {}", number);
     let number = 3;
     println!("Number {}", number);
diff --git a/info.toml b/info.toml
index e2aa82a7..66d60da2 100644
--- a/info.toml
+++ b/info.toml
@@ -68,7 +68,7 @@ then keyword 'let'.
 Constants types must also always be annotated.
 
 Read more about constants under 'Differences Between Variables and Constants' in the book's section 'Variables and Mutability': 
-https://doc.rust-lang.org/book/ch03-01-variables-and-mutability.html
+https://doc.rust-lang.org/book/ch03-01-variables-and-mutability.html#differences-between-variables-and-constants
 """
 
 # IF