These materials are mainly based around the Network Engineer job role. Personally I am looking to become a Network Engineer and then progress into a Cloud Engineer.
There are a few courses available at the moment that are on offer if you wish to pursue a career in Networking.
https://www.udemy.com/course/python-network-programming-for-network-engineers-python-3/?couponCode=AUG2020
https://www.udemy.com/course/linux-for-network-engineers-practical-linux-with-gns3/
https://www.udemy.com/course/cisco-ccent-icnd1-100-105-complete-course-sims-and-gns3/
These 3 courses have been created by David Bombal and reviews are great for what they have allowed others to achieve. They are €9.99 each down from €19.99 each, this offer has 4 days remaining.
I would also recommend using Codecademy to study Python as the language is becoming very big within the industry, especially within the Cloud.
https://www.codecademy.com/pro/membership?utm_source=rakuten&utm_medium=affiliate&utm_campaign=NetworkChuck&utm_content=3-39&ranMID=44188&ranEAID=gc4Pr1XnzZ4&ranSiteID=gc4Pr1XnzZ4-.odMl1mlbqBm6FCH5Qbg3Q
These courses are the ones I am using to help me study and they're 100% worth the money.