How to make my first short film?

I have to make a short film for my portfolio as I'm applying as a transfer to several top notch film schools. I don't have much experience or friends that do. Any tips? I have an iPhone camera, a small tripod, nothing fancy, a very small budget.

I have a concept in mind but without willing friends and experience, how do I get anything done? Is there any way to do it without having to really go out and pay for a full filmmaking class?

That would be very hard to do if you don't have any previous experience.

First of all, you'd need an idea for how the story comes together and how each scene plays out. Then you'd need the skills to put that into video. Great video editing is half the work done. And that's not something you can learn on the weekend, you can try out different filters etc to give it a professional movie feel or get help from someone who knows about it.

A film making class would really give you the kind of information that you'd need a long time to understand by yourself and maybe even let you meet people who can help you. I would do that first.