Hi!
Well, this all seems pretty normal, and by that I mean, paranormal (it's all normal to me LOL). People do have a tendency to freak out over things like this if they don't understand what's going on. Not saying you necessarily but believe me, I've seen people go on and on about how spooky or creepy something is, but this is only because they aren't open to understanding *why*.
As far as your dad is concerned, count it a blessing that he is showing you he is watching. He may have not done those types of things in life but he seems like he is trying to get your attention. Acknowledge him. Talk to him as if he were still there because he is and can hear you.
As far as the other spirit(s), sounds like a good ol' fashioned smudging may help. If you don't know what that is, type "smudging" into the search bar on the left and you will get a lot of good information. Sacred sage or white sage is available at mystic shops, you can order it on Amazon and you can even buy it at whole foods over where they sell candles and essential oils. The full moon is coming up. Take a glass jar and fill it up with purified water (brita, bottles or just boil your tap water) and leave the jar out under the full moon from one to three nights. Sprinkle it around the house. This will help dispel any negative energies that your spirits maybe attaching themselves to. Lay the smoke of the sage and the holy water on thick in areas that see the most activity. You may need to do it a few times and also do it every few months as maintenance. Hopefully you will see your situation improve.
Good luck!!
Angela