What are you trying to accomplish? Do you want to fool someone who is tracking you via GPS (such as work, or a parent or spouse), OR are you trying to fool geolocation restrictions of other apps, such as video streaming apps?
If it's the later then your best bet is a good VPN service, or anonymous proxy. These are not too difficult to setup and all the info you need is available on the internet. Proxies can be slow and bog down your device, and VPN's usually are not free BUT generally operate much faster. Just google "android VPN" or 'android free proxy"