Everything is entered on the federal side. You entered a 1099G for unemployment. Then CA subtracted it out. Any tax withholding is in box 4 for federal and state withholding in box 11.
Estimated payments is if you sent in any quarterly extra payments during the year on CA 540ES slips to cover any income that didn't withholding taken out. If you don't know what it is then you probably didn't send in any extra during the year.
