Where can I find a tutorial on how to create a front-end post submission?

Need to put together a front-end form to post to a post or page. Also need to include embed-code to show a video in the submitted content. Where can I find info on this?

Thanks,
Hanna in Tahoe

Thanks Rob, I think I need a little more help. I went through the steps on the page you gave me a link to (Use GF to Create User Submitted Posts) and got all the fields in there. However, what do I do next to create the page where the user can submit their post? I tried putting the form into a page, but that just submitted the form like a regular form, not creating a page. Is there a step-by-step from start to finish? Not just the form fields' part?

Here's a link to how far I got: http://www.probeinfo.com/create-a-form-here/

Also, is there a way to add a batch of photos instead of one-by-one? Like a gallery?
I also need a bunch of check-boxes, can that be added (can I use the tools that are under "Standard Fields" and "Advanced Fields" in my front-end form)?

Can the user embed a link to a video to play on the post they're creating?

What I'm trying to create is a form where a user can add a product for sale, have a gallery with 25 pictures and a bunch of check boxes for options or items.

Sorry for all the questions — I'm trying to decide whether to purchase the developer license — I love your product, just hoping it can do what I need right now.

Thanks,
Hanna in Tahoe