Noted advice in not cutting off more than 1 third of the crown. My first question is about the little branches that do not have any needles on them. Should those be cut off? #2 My white pine is about 12 feet tall now, and beginning to touch the house. In The fall, is it ok to cut those branches down to prevent scraping the house? #3. Looks a bit more yellow that I think it should. Does it need feeding or iron?

If the limb doesn't have any green needles, then the tree has started the self-pruning process and that limb is dying so can be removed and doesn't count towards the 1/3 of the crown guideline. Trees will naturally self-prune lower branches if they are not receiving enough light. That is why forest-grown trees tend to have tall trunks that are clear of limbs but trees grown in open environments tent to retain their lower limbs longer. In terms of yellowing needles, that could be caused by a number of issues. It would be beneficial to have an arborist evaluate the tree to determine if the yellowing is caused by a nutrient deficiency or a pathogen or something else.