basicly mate,
when its loaded, use select to navigate through the different search engines and use use circle to do a search, when a video you wanna watch is found press x to play it, leftt on the d-pad to play slow motion, right to fast forward and start to pause.... if on the 1st page theres nothing you wanna watch use the right trigger to move on to the next page of results (providing there is a next page) and thats about it mate....
you will need login details for some of the search engines which can be added to config file in the psptube folder
hope this helps
nevster