diff --git a/topics/kubernetes/README.md b/topics/kubernetes/README.md
index 6a404320f6..aa6657abae 100644
--- a/topics/kubernetes/README.md
+++ b/topics/kubernetes/README.md
@@ -6,7 +6,7 @@ What's your goal?
 
 * I would like to prepare for CKA certification
   * See [CKA](CKA.md) page
-* I would like to learn Kubernetes by practicing both theoritcal and practical material
+* I would like to learn Kubernetes by practicing both theoretical and practical material
   * Solve [exercises](#kubernetes-exercises)
   * Solve [questions](#kubernetes-questions)
 * I would like to learn practical Kubernetes
diff --git a/topics/linux/README.md b/topics/linux/README.md
index 75e95da396..cf2b09a37c 100644
--- a/topics/linux/README.md
+++ b/topics/linux/README.md
@@ -434,7 +434,7 @@ Its a bit that only allows the owner or the root user to delete or modify the fi
 
 <details>
 <summary>What is sudo? How do you set it up?</summary><br><b>
-sudo is a command-line utility in Unix-like operating systems that allows users to run programs with the privileges of another user, usually the superuser (root). It stands for "superuser do.
+sudo is a command-line utility in Unix-like operating systems that allows users to run programs with the privileges of another user, usually the superuser (root). It stands for "superuser do".
 
 The sudo program is installed by default in almost all Linux distributions. If you need to install sudo in Debian/Ubuntu, use the command apt-get install sudo
 
diff --git a/topics/terraform/README.md b/topics/terraform/README.md
index 083eebce15..9b5c5eb1ea 100644
--- a/topics/terraform/README.md
+++ b/topics/terraform/README.md
@@ -139,7 +139,7 @@ To be clear, CM tools can be used to provision resources so in the end goal of h
 ```
 resource "aws_instance" "some-instance" {
   ami           = "ami-201720221991yay"
-  instance_type = "t2.micro
+  instance_type = "t2.micro"
 }
 ```
 
@@ -156,7 +156,7 @@ The instance itself will be provisioned with type "t2.micro" and using an image
 ```
 resource "aws_instance" "some-instance" {
   ami           = "ami-201720221991yay"
-  instance_type = "t2.micro
+  instance_type = "t2.micro"
 }
 ```