In short, you will not be isolated, although you will be doing your work apart from other students.
Since this course is on the Internet, you need to have access to the Internet, including an email address, and you should be reasonably familiar with how the Internet works in order to do the course work.
The Internet is a public place. Do not think of your work as "private," when you post it to the class forums. Only members of the class can post to the forums, but a curious Web-surfer might enter the class pages and read some of the student work. In actual practice, very few people, if any, will enter student forums to read individual postings.