Some of the concepts in the links below are not delivered yet. If you are finding it difficult, then wait for next week otherwise you can practice and explore it yourself.
Chapter 1 of this book
• They will be working on to finish Chapter 1 of the book. Link was in lab 3 introduction to OpenSSL part
https://www.feistyduck.com/library/openssl-cookbook/online/
More examples of commands
• More examples to practice and master OpenSSL library
https://wiki.openssl.org/index.php/Command_Line_Utilities