Find the job
make sure you have the expertise they are looking for within the job description
apply online and pass all the test required and also the interview stage
wait to be selected
If you're working outdoors, when you apply just try and stay sober and clean for two weeks. They'll do a TDDA test on you and then if your lucky, an interview. If you are really lucky, you'll get a job picking up litter, cleaning toilets or some back breaking manual labour. But here's the plus side - a lot of people in the green space have drug or alcohol problems and a few have convictions - so once you're in you can get high and drunk all the time - not at work of course but you'll fit in with the team.
The process focuses on behaviour based questions where they want you to tell them about a situation that applies and demonstrates the behaviour in the question.
Part time - minimum 20hrs, but generally did a lot more due to covering other shifts. Mostly without notice, in my experience the rosters were more organised within larger teams.