Both come for free and are relatively easy to set up:
Tor is free software and an open network that helps you defend against a form of network surveillance that threatens personal freedom and privacy
It basically routes your traffic over several other nodes in the Tor network. In order to get started, download it from the link above, then follow the installation tutorials (Windows, OS X, Linux). The best
Hotspot Shield protects your entire web surfing session; securing your connection at both your home Internet network & Public Internet networks (both wired and wireless). [...] Hotspot Shield also makes you private online making your identity invisible to third party websites and ISP’s.
This software is available for Windows and OS X only. It connects to a VPN – so if your ISP knows about it, they might be able to block it just like they did with UltraSurf.