To get email updates when a colleague adds a new work, first search for them in Google Scholar. Select their profile from among the search results:
On their profile page, click the Follow button:
Input your email address, select “New articles by this author,” and then click “Done”:
Use the PubMed "Create Alert" feature to track new searches. Be careful with your search, though--you might inadvertently end up getting a lot of emails!
To get updates when a colleague adds new presentations to Slideshare, first search for your colleague and select their profile. On their profile homepage, click “Follow” on the left-hand side of the profile:
Next, you’ll update your email preferences so you can get an email whenever they add a new presentation. Go to Account Settings > Email and select “When someone I follow uploads a Slideshare”: