Important for the summer

Important for the summer

My plans for the upcoming summer is to work (where is a good question, I have send my CV to many job offers). But, the biggest but, is I am also applying to summer courses in Sweden.
The problem is to know what I want to apply for, should it be something fun, interesting or good to have?
The last day to apply for summer courses is the 17th of March, so there is some time left.

But, hopefully I will get a job and also be able to study.