I have just joined here, and while I have had some experience in online writing in the past, my main goal is to enter the apprenticeship program. I'm fully ready to commit to the requirements, and I intend to exceed them, however I know I need to build up my reputation before even hoping to be accepted.
The amount of applicants to such a program is immense, and even great writers and popular accounts get turned away. Unless you are a prime candidate for them to pick then you will not get accepted and have to wait for what I believe to be a six month period before applying again.
The Hubpages Team even consider the frequency of the hubs you've published before your enrolment, and like to see consistency on Hubpages and also off of it. I'd advise you to set up a blog and write on their too before applying. Once your on, your on, and providing you produce 8 quality articles a month, according to the theme of that month, you'll be extremely happy to be on there.
Make sure you are ready before applying, and I wish you good luck for when you are!