What do I do with the old computer? Shouldn't I backup files and transfer to new? What have you all done?
In Washington we have electronics recycling, I presume other states do also. One moves or copies and deletes all the data over to the new computer and uninstalls the programs. To be thorough you can run a reformat (Costco's Concierge service could walk you through how to do that) to wipe all data and programs off the hard drive. If one is worried about any lingering data you can take the hard drive out and smash it with a hammer. The rest of the computer can be recycled and there are valuable elements they can extract from them in my understanding.