1.) vba_cmps is a 3rd party modification for vBulletin. It is not a Jelsoft product. You can find it here:
http://www.vbadvanced.com/
2.) In the style's navbar, there should be a link for "new posts". It might be in the "quick links" menu. If not, you can edit your style and include a link to
search.php?do=getnew to get to "new posts".
3.) There are various advertisement methods. You'll have to do your research and pick and choose which ones you'd like to use. Here's a quick listing.
http://members.vbulletin.com/adsense.php
https://vborg.vbsupport.ru/showthread.php?t=203948
https://vborg.vbsupport.ru/showthread.php?t=203949
https://vborg.vbsupport.ru/showthread.php?t=180277
https://vborg.vbsupport.ru/showthread.php?t=201116