Try a Google opt for your niche and see what the competition is advertising.
If there are any downloads make sure they easy to once the download is done for the user. It sounds somewhat ambitious and out in this world idea to design your own website all alone and independently. http://Rivne-News.Com.ua/go/url=-aHR0cDovL0Jpci5Mb2NhbG1lc2gub3JnL2Rva3UucGhwP2lkPW1ha2VfbW9uZXlfYmxvZ2dpbmdfdXNpbmdfdGhlc2VfOF9zZWNfZXRfYmxvZ2dpbmdfdGhvdWdodHM