Easy WiFi makes it easy. You run it and it will scan the air for networks and wireless connections. You'll see a list of networks and you decide the one you want to connect to. Ok, you'll need the password if it is not an open one.
Easy WiFi can be extremely helpful if you are on holidays and you need to be online. It's an easy way to scan for accessible wireless networks. Run it, check if there is any WiFi available, connect and surf the web as usual.