Which bit to you need help with?
Get a VPN service, try a free one to start, vpnreactor for example. Set up instructions should be there.
Then visit https://proxybay.co/
There is a list of proxies for pirate bay (not the only one available)
Click and then torrent all the freely available legal content there. Avoid the illegal stuff.
Remember to check for viruses with a decent antivirus program.
The VPN would deal with all the traffic from your computer to the internet. It would bypass any restrictions on traffic imposed by your ISP.
In the UK we can't access some torrent sites as the major ISPs have them blocked. Just sidestep them, I am sure they are happy to plead plausible deniability.
Edit: Most VPN services have a restriction on traffic and speeds the more you want the more expensive they are. I use VPN to get torrent links then revert back to my regular ISP.