Hi Leona, quite a few of our hometalkers have shared how they painted their countertops. You can find all those tutorials here - https://www.hometalk.com/search/all?filter=paint%20coutertop
This is the method I used when I painted my bathoom countertop and it turned out even better then I had hoped. Only real difference was that my sink is an enamel drop in and the one in the picture is one continuous piece.
Here is some info to help you.https://youtu.be/wZ6azl6j9zs
Take a good photo to your home improvement store paint dept. and ask for their advice on products and application tools.
Hi Leona Epoxy works great over countertops! Here is a full tutorial!
Use a Giani counter top kit. Come and see what we did with an old lime green counter top from the 70's. Worked great and really held up to kitchen use too.
Diane at In My Own Style has an excellent tutorial on how to paint countertops.
This may help: https://www.hometalk.com/13687018/faux-marble-painted-countertops
I've done this twice, here are tutorials for both: https://thehoneycombhome.com/diy-granite-countertops-yes-really/ and https://thehoneycombhome.com/how-to-paint-kitchen-countertops/. Good luck!