Google Location history showing me in another continent? Did someone hack me?
From a security standpoint, it wouldn't hurt to change your passwords. I like LastPass - it keeps track of all my passwords and all I have to keep track of is ONE master key. It plugs in to your browser for quick access to sites. 

Also, for added security on your Google account, turn on 2-factor (2-step) authentication. It should be under your account settings under security. Basically, it will ask you for your phone number (mobile) and you will get a text when you attempt to login to your Google account/services, this way if your password ever gets hacked, your account is still safe as long as you maintain control of your mobile phone. Hope this helps bud. 

Here is the link to Google's 2 factor authentication landing page: Google 2-step authentication