Yes, I would read Seneca first or I highly recommend "A Guide to the Good Life: The Ancient Art of Stoic Joy". Then reading Epictetus and Aurelius. Henry David Thoreau and Ralph Waldo Emerson can also be added to the reading list in my view.

I can also recommend Cicero. But like any Stoic needs to be read critically.

http://www.newworldencyclopedia.org/entry/Cicero#Stoic_Parad...