Thanks for reaching out to the Community! You asked a lot of questions, so I will address each one:
Can I just post a pop up form?
You can create a popup form and instal it on your website
Where will it go?
The code is usually installed in the footer of your website.
Does it have to go to a landing page?
The pop-up is its own signup form, and does not need to be connected to another form. Once created and installed on your website it will pop up as people visit your website
What about the sign-up form?
We have a few ways people can subscribe to your list
I have not been able to upload a document that is accepted. Why?
The most common reason for a document not uploading is usually file size. You will be unable to upload images or documents larger than 5kb. Without knowing they type of file, file size, and if you are getting an error, I can not fully answer why
I don't understand what I need to do to get this to work.
If you need further assistance I recommend calling our Support Team for a walkthrough
Are you both only for landing pages?
I am unsure what you mean by this question
I already have a contact form on my website. Please explain both to me