Neglected garden

Hey not gonna give you the whole sob story but parents left at a young age and garden is now severely overgrown, I have a rough idea how to tackle and am ready to get started! But any advice would be appreciated! Thank you. Weeds have grown over six foot Gate is off the hinges so basically pointless Glass everywhere Random upside down pond furniture and doors?? Half demolished shed Old bbq which was actually quite nice before abandonment but feel like I’m gonna have to part ways. Am only 19 but I do not want this to be my life anymore I am ready to spend a good amount on this too.