I recommend subscribing using the RSS feeds.
For help with how to subscribe to a feed, go through this.
Or, you can also subscribe via email using the form below.
Make sure to confirm your subscription from the mail sent to you asking to confirm your subscription.
I suggest you update your subscription preferences with the frequency and timing of the mails convenient for you. You can do this by following a link in the subscription confirmation mail sent to you after you confirm your subscription. Or you can visit subscribe.wordpress.com at any time and enter your email address there to receive a mail containing information about reviewing and updating your subscription preferences.