I installed K2 Blog onto my Joomla but I don't seen articles in Blog (error 404 showing)
I viewed some K2 youtube courses and I don't have the K2 buttons
Do I need to install more of K2 software to be able to use the Blog function?

after installing the K2 software again (version 2.7.1) the blog items shows up
but after viewing the youtube course material i see that my dashboard still looks like the original Joomla and not the K2
how could that be achieved?

Hello,

The quick icons is an administrator module, make sure that that module is published.
You need to verify this in your site's module manager.