Ok Because this is the only thing stopping me from getting my website and I really need this I will try to explan it better.

Hi guys,

I have a website idea but it needs some specific things on it.

Firstly- People will be uploading ads of their unused items, like furniture for example. I will have a 'Place Ad' in the nav bar. The problem Im having is what to do then. Do I make a form with Item condition etc... and then they submit it or how do I go about it and will it upload to my site directly?

Secondly- The ad will hopefully have a limited number of weeks on my site before they need renewal. Is there a way I can have something to countdown the weeks and take it off automatically after a period of time?

Most important I have never created a webpage before so I have No HTML , CSS experience. My webhost gave me a website builder called Soholaunch.
If I could use this it would be great. Heres the Soholaunch website and features.
Soholaunch http://info.soholaunch.com/
Features http://info.soholaunch.com/websitebuilder/features/

Here is an example of a similar website. http://www.gumtree.ie/

I hope Im not too new to not be able to do it.
Thanks Matt