If you go to the main page, or any other product page, at the top there is your "Account" link. If you click on that it will show your account information, and under "Notifications" you can set your notifications preferences. You can set your default receiving emails setting to "NO", but then...
Be sure you've allowed publishers to contact you about their products in "Account", and check your junk mail for notices. You can always go to "My Library" and download the most recent version of any titles you've purchased.
We're always looking for suggestions to improve our service, and our techs have been coding a new site overhaul for some time now. I'll be sure to remind them to place the language options in a more prominent place on the site, thanks for the suggestion!