You don’t need to think like that way
You did it enough to decide
There are a few anxieties
First
I’m not sure I can understand English
→you will start to study TOEIC
Probably officiall text No3 would help you
Second
I feel anxious deeply about my pc skills
Although I bought excel book , I’m not sure what kind of skill I need
→HR said your job is also important after making deal. Therefore you need to the skill for analysing
Obviously you also need to study presentations skill.
To sum up,
You will start to study TOEIC.
And you need to start reading the text book you bought last week.