Do you have any advice for someone who always had cats but wants a dog in the near future?

I'll be moving to a bigger house with a yard and I want my first dog, how different would be to having a cat? Is training easier? I've trained cats before (give paw, spin, sit, jump, down, etc) so I do have some training experience, not saying that having a dog would be easier but I would love to try more complex things, go for walks, play fetch (I did have a cat who plays fetch but he out of nowhere forgot how to bring back the toy) or maybe I should just stick with cats because I'm underestimating how hard is to have a dog? Are these beautiful animals too different and not on the same level?