Just to be sure, are you 100% certain that the wall you're wanting to move is not load bearing? Gotta make sure!
There's a few skills involved in this kind of project.
You'll have to carefully demolish the wall you want to move, and plan on moving the electrical in the wall. This will leave a void in the flooring that must be dealt with. You'll frame and wire the new wall, and will sheetrock and finish the ceiling where the old wall was. Then you'll have to sheetrock and finish the wall. Then you'll have to trim the wall and door opening.
Quite a bit of work for most people. If you're confident that you're not biting off more than you can chew, we're here to help you along the way.