The Elizabeth Zimmerman and Jacqueline Fee books have sweater basics from the bottom up, there's not many design tutorials online.
It's pretty easy to design one yourself - CO sts for both front and back and knit to the underarms. Place the underarm sts on holders, knit the sleeves in the round and place their underarm sts on holders. Then you can either work the back and front separately by working flat and shaping the armholes and shoulders, doing a shoulder seam or 3 needle BO. You would have to set in the sleeves if you do the upper body this way, or you can actually pick up sts around the armholes, short row across the cap and knit the sleeves down to the wrist. If you don't want set in sleeves, you can decrease every other row for raglan shaping, or several decreases every couple inches for a circular yoke.