How do I go about chalk painting a dark pine stained dresser?

You actually don't need to sand before painting with chalk paint, but it wouldn't hurt to sand the dresser so the shine is gone. After that, clean off any dust and paint the dresser with chalk paint. When the paint is dry, add was or wood finish clear coat.

Here is a tutorial with pictures you might like: https://www.confessionsofaserialdiyer.com/how-to-paint-furniture-using-chalk-paint/

Here is another tutorial from Hometalk: https://www.hometalk.com/diy/bedroom/dressers/dresser-redo-with-chalkpaint-9830013

Dresser Redo With Chalkpaint

Th tannin in the wood will likely bleed through and ruin your paint job. There are many that say chalk paint is the way to go,and you will be much happier with your end result if you put it the work up front so you don't have to do it again. Clean the piece with a mild cleaner and then with water to remove any residue, let it dry. Lightly sand it, so it is not shiny. It doesn't need to be sanded to the wood, just scuffed up to let the new paint adhere. I would spend 5-10 minutes only on that step. Remove all the dust and debris from sanding (a damp cloth should do the trick) and let it dry. Since it is a dark piece and I assume you want a light colored paint, you really want to use a good primer to seal in everything. The secret is to keep the coats nice and thin and not glop it on. After that, you are set to paint! With chalk paint I have found that using a great brush and less paint gives a great look. You may need 2 coats of your paint to cover, but you will be so much happier. If the paint gets brush strokes in it you can always sand it in between your coats of paint for a beautiful smooth finish. If the piece will be getting tons of use, you may want to consider using a polycrilc top coat to seal it. I hope this does not discourage you from doing your project. Good luck!

The shinier the finish the more prep. no matter what you are planning to do to it. http://www.vintagebarnboutique.com/2015/05/chalk-based-paint-myths-learn-how-to-paint-furniture/ sealing chalk paint http://www.vintagebarnboutique.com/2015/05/chalk-based-paint-myths-learn-how-to-paint-furniture/