Help me with some info

That's a confusing bunch of questions. As I understand it you're asking: how can I avoid storing lots of actual torrents. That would be by creating a site that's purely links to other torrent sites (much like, say, torrentz.com). You don't have to store the files and you're basically just outputting database results to a dynamic web page. What you'd need is someone who can create you a script to scrape the content off various torrent sites as it appears (say, every hour) and put it all together into a database for you (title, category, link to other site's page). It's called aggregating. Then you'd need a search page that queries the database and returns results that match the query. It's all fairly basic stuff for a decent programmer, though the scraping part may have to be bespoke, since each site probably uses its own categories and display, etc. Hope it helps.

Torrents are mostly illegal content. That is why torrents are stored on another server. So you either need to make an agreement with one of the torrent hosts or get your own off-shore server (where the authorities cannot easily catch you!).