If you have never had a dog before, most definitely think very long and very hard.
They are very very different to cats, and extremely dependent on their people.
It really isn't fair to leave a dog for more than 4 hours, and that is impossible with a puppy.
There are far too many dogs who lead miserable lives crated while the owner works, and the dog gets taken out for a short walk with a walker who spends much of ''your'' hour picking up and dropping off dogs..
Dogs left to mournfully howl all day long in a crate- that is no fun for anyone.
Training also starts from Day One.
No to biting human skin, and yes to biting their toys and chews-
I made a ''dig pit'' in a corner of my garden with ''clean'' compost as mine loved to dig so much as a young puppy.{Pic}..but of course she thought any soft soil was then ok to dig in and my carefully planted snowdrops were uprooted!
Dogs need a lot of research to make sure you are getting the ''right'' dog.
Crufts ''discover dogs'' might well be a very good idea.
If you have a lot going on, definitely don't get a dog until things get less fraught.
A calm dog usually has a good routine, plenty of exercise when old enough , mental stimulation, and feels ''safe''.
My son had his ''own'' dog at age 11 and son came on all the walks after school and in the hols - plus he picked up poo {supervised} as it was ''his'' dog.
It did work out very well. Dog saw him into his early Twenties..like a ''Brother''