The important parts are that you can follow Steps 1 (Installation) and 5 (Running btcrecover) from
the Tutorial. The other steps I can try to help you out with.
Try to describe everything you remember about your password, and anything you think you may have messed up while typing it in (in other words, any typos you think you may have had). Don't use specifics, e.g. if you know your password contained the word "secret", just substitute in another word in your description.
I'm familiar enough with btcrecover that I can finish the other steps off without too much difficulty (I hope

).