I am not a new knitter however it has been a long time. I’m a kidney transplant knitter with all this time on her hands. ((Hi to any other 'dont you dare leave the house for 12wks, knitters!!)
I’m knitting the sleeve of a jacket.
This is the instruction word for word. Obviously my size in brackets
Taking extra stitches into rib as they occur increase 1 st at each end of next row ( that’s fine, it’s this next bit) and (13) following (5th) rows (91st) 
Thank you in anticipation
Tina x