Yes. You can go by way of mailchimp or ConstantContact and pay for a service, or you can learn how to do it manually. That's always better and you'll have something to add to your resume. If you need a good software for newsletters (HTML based), then I would go with Microsoft Publisher. It's part of most Microsoft Office packages and you can do unlimited things with it. There are newsletter templates all over the web for Publisher, too.
Additionally, if you're sending these from a website and you're using Wordpress, or some other type of Content Management System (CMS), then check out this link...
There's going to be a slight learning curve with Wordpress if you've never used it before, but you can do amazing things with Wordpress and all the plugins that come with it (including the newsletter ones).
There's another link for you to check out here.
Good luck and post if you need additional assistance.