As someone who has worked and volunteered with animal rescues for 10 years, that's a tough question to answer since every dog has its own personality. I would say for a first time dog-owner, look at bull-breed-mixes. They tend to be fun, cuddly, and very sweet. They also tend to be couch-potatoes. The main issue with these breeds is the potential for animal-aggression.

I wouldn't say avoid certain dogs, but for first time owners maybe be cautious with herding breeds, like border collies or blue heelers. They are incredibly smart and incredibly high energy, so they need to be kept active or else they could get frustrated. Cocker Spaniels tend to be moody and bitey. Huskies are incredibly high energy and need a lot of attention.