Its a personal thing & skills vary greatly with each person but probably the easiest options are those with minimal shaping, drop sleeves or raglan. (Set in sleeves can be a pain to sew in.)
A few ideas.
many folk would recommend the top down raglan. One here.
Most of these are good starting projects. http://www.dailyknitter.com/exclusive.html
Many popular pattern sites have the patterns listed with skill level. from beginner to advanced.