Watch the C sus 2 Tuning online guitar lesson by Vicki Genfan from Essentials: Open Tunings

If you have trouble with the partial barre chords that require pressing down only the 6th, 5th and 4th strings - take the time to practice this before you try adding the additional movement of notes to the chord. It can be tricky to get your first finger (left hand) to bend in this way while also leaving the 3rd, 2nd and 1st strings open!