Make sure you soak the kibble first. I do recommend obedience classes once he is settled in. If you are going to vaccinate and deworm etc., also wait until he is settled in, no point in over loading his little system. Keep plenty of water available at all times. Having said that when it comes to nipping etc. use your big voice "Knock it off". When it comes to doing nails, take your time. I like to Dremel, but this can really freak a dog out, so sometimes using a nail file for a minute and then building up time. Once trust is established, you can then tap on each nail with the Dremel and build up time. If you prefer to clip, just take the edges off at first and build up to a proper cut. All the best to you. Sometimes with a rescue you end up wondering who rescued who:D