Blimey...

Ok the first question. One of my colleagues has just finished writing a guide on how to add online shops to your InstantPro site. You can find this here : http://freeola.com/website-builder/tutorials/online-shop/

With the anchors...

Not really sure what you were saying if I am honest here. However anchors are generally used to place mark within the page you are currently viewing. If you are going to an external site you should use hyperlinks.

In order to create a successful anchor you will need to have your text or content ready in order to link. The select the content you wish the anchor to be applied to (or where you want the anchor to be) and press the anchor button on the toolbar. It will then ask for your anchor name. Enter this and press update. (It should display a highlighted tiny anchor image where you have placed the anchor on the page)

Next select the content that you wish the user to click to shoot to the anchor. Then select the link button. This will bring up your lnik options. Within this is the option to link to an anchor on the page (option C/D I believe). From the dropdown menu select your anchor name, apply the settings and voila!

And lastly..

There is no option in the InstantPro Builder to upload files for your users to download currently. In order to do this you will need to upload the file elsewere and link directly to it from your website.