Watch the Triads: Level 1 online guitar lesson by Chris Buono from Guitar Gym: Triad Workouts
This first workout will have you playing root position shapes across the neck vertically in two different positions. You'll start out in the V position where all the roots will be played on the 5th fret. Be mindful of the fingering changes when you play the top two chords where the B-string is involved (that will always throw a wrench in fingering schemes). Once you make it to the top string set you'll then shift up two-and-a-half steps or a perfect 5th to the X and IX positions where you'll descend the same triads.
Just like any other set of changes be sure to look and think ahead, try to grab the fingering in the air before coming down on the strings and position your fingers so every note is heard clearly.