Your example starts a bit late for an easy explanation. It seems to be the answer to a question like:

Wenn du ein Referat über xxx schreiben müsstest, wie würdest du vorgehen?

(Engl.: If you would have to write an essay concerning xxx, how would you proceed?).

This is a hypothetical situation, which can't easily become reality by your stroll to the library. (Apart from the fact, that the search engine of your choice is the much more likely answer today.)

Your example starts a bit late for an easy explanation. It seems to be the answer to a question like:

Wenn du ein Referat über xxx schreiben müsstest, wie würdest du vorgehen?

(Engl.: If you had to write an essay concerning xxx, how would you proceed?).

This is a hypothetical situation, which can't easily become reality by your stroll to the library. (Apart from the fact, that the search engine of your choice is the much more likely answer today.)