diff --git a/subjects/arrays/README.md b/subjects/arrays/README.md
index c0f2c3cf..e4ed5064 100644
--- a/subjects/arrays/README.md
+++ b/subjects/arrays/README.md
@@ -11,7 +11,7 @@ Write a **function** that takes an array of i32 and returns the sum of the eleme
 
 ### Notions
 
-[arrays](https://doc.rust-lang.org/std/primitive.array.html)
+- [arrays](https://doc.rust-lang.org/std/primitive.array.html)
 
 ### Expected functions
 
diff --git a/subjects/bigger/README.md b/subjects/bigger/README.md
index ef8d4fa0..563010a5 100644
--- a/subjects/bigger/README.md
+++ b/subjects/bigger/README.md
@@ -6,11 +6,7 @@ Create the function `bigger` that gets the biggest positive number in the `HashM
 
 ### Notions
 
-[hash maps](https://doc.rust-lang.org/book/ch08-03-hash-maps.html)
-
-### Dependencies
-
-rand = "0.7"
+- [hash maps](https://doc.rust-lang.org/book/ch08-03-hash-maps.html)
 
 ### Expected Function
 
diff --git a/subjects/borrow/README.md b/subjects/borrow/README.md
index ef4d7b44..e7e240b4 100644
--- a/subjects/borrow/README.md
+++ b/subjects/borrow/README.md
@@ -13,7 +13,7 @@ pub fn str_len(s: ) -> usize {
 
 ### Notions
 
-[Primitive Type str](https://doc.rust-lang.org/std/primitive.str.html)
+- [Primitive Type str](https://doc.rust-lang.org/std/primitive.str.html)
 
 ### Usage
 
diff --git a/subjects/borrow_me_the_reference/README.md b/subjects/borrow_me_the_reference/README.md
index 0acde16a..18724605 100644
--- a/subjects/borrow_me_the_reference/README.md
+++ b/subjects/borrow_me_the_reference/README.md
@@ -28,8 +28,8 @@ pub fn is_correct(v: &mut Vec<&str>) -> usize {
 
 ### Notions
 
-- https://doc.rust-lang.org/book/ch04-00-understanding-ownership.html
-- https://docs.rs/meval/0.2.0/meval/
+- [ownership](https://doc.rust-lang.org/book/ch04-00-understanding-ownership.html)
+- [meval](https://docs.rs/meval/0.2.0/meval/)
 
 ### Usage
 
diff --git a/subjects/card_deck/README.md b/subjects/card_deck/README.md
index 76e92d24..850a61bb 100644
--- a/subjects/card_deck/README.md
+++ b/subjects/card_deck/README.md
@@ -25,8 +25,8 @@ Define:
 
 ### Notions
 
-[Crate rand](https://docs.rs/rand/0.3.14/rand/)
-[Enums](https://doc.rust-lang.org/book/ch06-00-enums.html)
+- [Crate rand](https://docs.rs/rand/0.3.14/rand/)
+- [Enums](https://doc.rust-lang.org/book/ch06-00-enums.html)
 
 ### Dependencies
 
diff --git a/subjects/changes/README.md b/subjects/changes/README.md
index 2e732535..e59e175d 100644
--- a/subjects/changes/README.md
+++ b/subjects/changes/README.md
@@ -10,8 +10,8 @@ Define the **function** `change_brightness` that receives a `Vec` of lights, an
 
 ### Notions
 
-[Example of Structs](https://doc.rust-lang.org/book/ch05-02-example-structs.html)
-[Keyword Self](https://doc.rust-lang.org/std/keyword.Self.html)
+- [Example of Structs](https://doc.rust-lang.org/book/ch05-02-example-structs.html)
+- [Keyword Self](https://doc.rust-lang.org/std/keyword.Self.html)
 
 ### Expected Functions and Structure
 
diff --git a/subjects/hashing/README.md b/subjects/hashing/README.md
index 1cc5ed4b..acd4564d 100644
--- a/subjects/hashing/README.md
+++ b/subjects/hashing/README.md
@@ -13,7 +13,7 @@ that appears more often).
 
 ### Notions
 
-[hash maps](https://doc.rust-lang.org/book/ch08-03-hash-maps.html)
+- [hash maps](https://doc.rust-lang.org/book/ch08-03-hash-maps.html)
 
 ### Expected Functions
 
diff --git a/subjects/simple_hash/README.md b/subjects/simple_hash/README.md
index 1ad63d73..5877344d 100644
--- a/subjects/simple_hash/README.md
+++ b/subjects/simple_hash/README.md
@@ -10,7 +10,7 @@ Create a **function** `remove` that removes a given key from the `HashMap`.
 
 ### Notions
 
-- https://doc.rust-lang.org/rust-by-example/std/hash.html
+- [HashMap](https://doc.rust-lang.org/rust-by-example/std/hash.html)
 
 ### Expected functions
 
diff --git a/subjects/string_literals/README.md b/subjects/string_literals/README.md
index ed2c51af..1b876854 100644
--- a/subjects/string_literals/README.md
+++ b/subjects/string_literals/README.md
@@ -15,8 +15,8 @@ Create the following functions:
 
 ### Notions
 
-- https://doc.rust-lang.org/1.22.0/book/first-edition/the-stack-and-the-heap.html
-- https://doc.rust-lang.org/rust-by-example/primitives/literals.html
+- [stack and heap](https://doc.rust-lang.org/1.22.0/book/first-edition/the-stack-and-the-heap.html)
+- [Literals](https://doc.rust-lang.org/rust-by-example/primitives/literals.html)
 
 ### Expected Functions
 
diff --git a/subjects/string_permutation/README.md b/subjects/string_permutation/README.md
index b2cdd82d..6e60b0b9 100644
--- a/subjects/string_permutation/README.md
+++ b/subjects/string_permutation/README.md
@@ -9,7 +9,7 @@ Define the **function** `is_permutation` that returns true if:
 
 ### Notions
 
-[hash maps](https://doc.rust-lang.org/book/ch08-03-hash-maps.html)
+- [hash maps](https://doc.rust-lang.org/book/ch08-03-hash-maps.html)
 
 ### Expected Function