As far as I know, new guides aren't being chosen at this time. But I would definitely keep an eye out on these forums when the time comes.
In the meantime, give this a read if you haven't already. It's stickied on the top; Playstation Home Guides
I applied to be a home guide like 2 weeks ago. I was just wondering if/when they will inform you if you've been accepted. Does anyone know when they will be accepting more applicants? Would really love to be a guide... Love helping people out and keeping them informed
It was nice to see you at the Loot theater,
I'm glad to hear you love to help people out, that's what makes being a volunteer so fun and rewarding.
I have seen you around Home before and know you go out of your way to help people, you have a great personality and a lot of energy, just keep doing what you're doing until they make more picks in the future.
P.S. Thank you for your very kind words, LiLBlueEyes. Made my day
Have a great day everyone!