You can remove recommended channels by selecting "Not interested" on your homepage, this will influence how YouTube suggests channels to you in the future. Here's more about managing your recommendations: https://goo.gl/mfD7rf
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
You can remove recommended channels by selecting "Not interested" on your homepage, this will influence how YouTube suggests channels to you in the future. Here's more about managing your recommendations: https://goo.gl/mfD7rf