Changing from one color to another help

What is the best way to change colors when making a scarf. I don’t want to see knots at the ends. Help please. thanks

Pattern calls to change color everyother row. thanks

To change color you just start knitting and then weave in the ends later. If you’re using two colors and changing that often you can carry them up the side, but make sure you wrap the yarn so they are held against the side. Always bring the new yarn under (I think) the old color. It can show a little when you do that so it’s up to you.