I am newbie in Linux(just few days)It's new for me and I know it's tough case)
please don't judge me strictly

I installed CentOS ( MY chief's ORDER low move toward Linux) couple days ago and try to learn how to use it.
Firstly, I got Thunderbird, then I decided to get "wine" in order to open excel files.
I trying to download it, but there is an error.
I added some screens.
I feel that it's not last time when I will be need help using CentOS or another Linux/Unix OS'.
Please help me)
P.S. I am ready to get advices about which books I need to download and start learn it.
Thanks.