You can also visit the sweater pattern generator, free online at www.knittingfool.com. If you enter your measurements, your yarn gauge and needle size, it will calculate the directions for a basic raglan, drop-sleeve or set-in sleeve pullover.
There are basically 2 weights if baby yarn. One is called "Sport Weight" & the other is called "Fine". Regular thickness yarn is called "Worsted weight" & the thicker yarns are called "Bulky weight" or "Extra Bulky". You'll need to know what weight your yarn is before you can look for a pattern. Once you know what size your baby yarn is (by thickness) you can then search for a pattern using the yarn weight. For example you can Google "free knitted sport weight sweater patterns" or "free crocheted sport weight sweater patterns" or some form of those words. There are lots of adult sweater patterns for Sport weight yarn. Not so many for thinner yarn. Of course knitting with baby weight yarn can take much longer, so be prepared for the long haul!
* One of the best places to search is for nice sweater patterns is "freepaterns.com".
You didn't say if you're a beginner or more advanced knitter. Also, you didn't say if you wanted a "pull over" or a "cardigan". Can you give us more info?
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