Running Electrical for Doorbell

I need to run the wiring for the wyze doorbell. House doesn’t have a doorbell.

  1. What type of transformer do I need to convert the electricity to low voltage? Would this one at menards work?

https://www.menards.com/main/electrical/doorbells/heath-zenith-doorbell-transformer/sl-130-03/p-1570688893619.htm

If not, can you link to some that would be helpful.

  1. What’s the best method to locate the area I need to drill the hole so I can run the wire to the front door? Trying to avoid errors when drilling.

  2. I need to access a constant electrical source, so I’m assuming an existing receptacle should be good? I would pigtail off an existing circuit, and run that to the transformer.