Here's the shapes for C dorian on the top 4 strings.
Work through them in the same way without worrying about the Roman numerals over each shape. Remember all of these shapes are basically a C dorian scale harmonised in 4th's. These shapes start from the 3rd fret on the D string which is the note F. However, they still outline a C Dorian scale for our purposes. I'll show you how to apply them to other modes in the next lesson.
Again, make sure you know these really well before moving on!