Ecommerce Website Using CodeIgniter

Dear All,
  I am new to CodeIgniter and with what I have seen with CI 3.1 documentation I read half way, I think I can quickly do a great job with it. 
1) Please, can anyone lead me to excellent tutorials, videos or books that will walk me through  step to step of building E-commerce Website Using code igniter, both the admin panel and the frontend.

2) Can I also get tutorials on how to use CodeIgniter 4. and Bootstrap.

I am a PHP and MySQL savvy and I don't want to have the same experience I had when learning PHP by using about six years to look for the book which would add comment to blog , all of them were just saying in order to keep the script simple they would not add comment.  I believe that you people can point me in the right direction and I will get the right materials without wasting my precious time.
Please, I am earnestly waiting for your reply.