Improve main readme

Author: filhodanuvem

1-terraform/README.md

@@ -7,7 +7,10 @@ The idea of this chapter is to get familiar with terraform since you will use it
 I recommend you the solve the following problem, because there are a lot of networking concepts involved on it and that might be helpful in the next chapter. 
 
 ```
-Create and deploy a lambda function that is not accessible outside of a private network but which has access to https://checkip.amazonaws.com/. Use terraform to manage the resources. 
+Create and deploy a lambda function that is not 
+accessible outside of a private network but which 
+has access to https://checkip.amazonaws.com/. 
+Use terraform to manage the resources. 
 ```
 
 ### References 

2-kubernetes-cluster/README.md

@@ -1,13 +1,13 @@
-# 2 - Kubernetes Cluster created with Terraform
+# 2 - Kubernetes Cluster
 
-### Dependencies 
 
-This chapter doesn't depend on any other but the result of it will be used to others, so you must have to keep all the resources running before moving to Chapter 3.
-
-### Exercise
+### Problem
 
 Create a kubernetes cluster on AWS EKS. The cluster should contains a flux v2 system running and watching this own repository but on the path `./3-continuous-deployment/flux`. 
+Alternatively you can use minikube or kind to set up a cluster locally but I recommend you to do that in AWS to enable terraform run via pipelines (eg.: Terraform Cloud). 
 
-### Solution
+### References 
+* [Terraform eks module](https://registry.terraform.io/modules/terraform-aws-modules/eks/aws/latest)
+* [flux](https://fluxcd.io/docs/)
 
 

README.md

@@ -4,6 +4,8 @@
 
 A set of exercises for backend engineers who would like to jump into devops technologies. 
 
+### Chapters
+
 - [x] 1 - AWS Networking - Basics with Lambda 
 - [x] 2 - kubernetes cluster
 - [x] 3 - Continuous Deployment
@@ -12,3 +14,10 @@ A set of exercises for backend engineers who would like to jump into devops tech
 - [ ] 6 - Continuous Integration (TF and helm tests )
 - [ ] 7 - Continuous Integration (Helm chart)
 - [ ] 8 - Cluster meshes (Istio / Cilium)
+
+### How to use this repository
+
+First of all, fork this repository and do `git checkout problem` to access the version without the answers.
+
+You can use the repository in two different ways; Do every exercise from the scratch since they are defined inside their REAMDE's chapter.
+Another option would be simply reading the problem and looking at the current solution, in case of suggestion please open an issue or send a pull request.