For some time I dated a guy who was a landscaping professional, he had a degree in horticulture and it's what he did for a living. He helped me design a lovely "English style" front garden at my last house. No lawn to mow at all, just ground cover and lots of perennials.
I'll do the same at my current house...actually am bit by bit eradicating the front lawn with perennial beds. I enjoy planting and weeding and faffing about in the garden, plus I probably couldn't afford to pay someone to do it. I feel much prouder of what I've done myself, such as it is!
I'm sure there are all sorts of sites that help you with garden layout and design. I've seen many, although none come to mind immediately. And of course there are helpful people right here who have absolutely gorgeous gardens!