There are also many companies that will help you with the layout and design of your kitchen like Home Depot, Ikea, and Lowe's. Some of them will even install most of it for you!
There's also places like Wren's Living that will do every step with you. They help you plan, design, custom fit things in your space, install, and even go on to extend your care afterwards in case there are any mishaps. What ever company you go with, be sure to familiarize yourself with their warranty and guarantee information.
So if you aren't comfortable trying to figure out a space on our your own don't hesitate to ask for help! Sometimes having a designer there to walk you through things can make the process a lot smoother, and give you lots of little tips and tricks you wouldn't have thought of on your own.