Just don’t. I know money is tight, but your sanity is important, too. Yes, there’s a chance an older iPad could still operate decently, but unless someone is giving them to you for free, try and hunt for a newer model. Many of the older iPads no longer receive software updates, and they’ll seem sooooo slow. The Mini 1 and iPad 1-2 have very low-res screens, too. Forget buying an iPad Air 1—these are starting to get long in the tooth. If you’re buying for children, try Amazon’s Fire tablets instead, which are cheaper than any new iPad.