Yes, I do believe they have a specific lessons on just using symbols. The nice thing is they also have a typing test which is just a paragraph you can test that

Yes, I do believe they have a specific lessons on just using symbols. The nice thing is they also have a typing test which is just a paragraph you can test that once a week to see your improvements. keybr.com is also nice after the lessons from Ratatype because it shows you which letters you are still struggling with. They have a nice stats page.