What is the best way to paint a laminate particle board bookshelf?

I know a lot of people use chalk paint to paint laminate. I believe it comes in all kinds of colors, perhaps this DIY will inspire you. https://www.hometalk.com/diy/paint/furniture/how-to-paint-laminate-furniture-40111532

Step 1: Sanding

To begin, I gave each bookcase a good sanding with my orbital sander It’s important NOT to sand too much since the surface is essentially paper, but it is important to get them ‘roughed-up’ enough so the paint would absorb into the surface.

Step 2: Priming

Use a good primer, either Kilz or Zinser 123 which blocks, seals, and preps the surface to which the paint will adhere.

Primer is important, especially when painting over laminate. Unlike wood, laminate is a smooth, non-porous material, so it really needs something to ‘grab’ onto—primer will do the trick! It’s suggested that primer takes seven days to completely dry.

Step 3: Painting

After sanding, priming, and making a few updates, it is time to PAINT! I used a brush for the corners and a roller for the flat surfaces. In certain areas, I used a brush first, then went over the same surface with the roller to achieve a smooth, stroke-less surface.

Tip: If the surface isn’t sanded or not sanded enough, then the paint will “bubble” or spot, as shown on the right, because it’s not properly adhering.

Always helpful if you can take it apart as much as possible and paint horizontally.

I would do two coats of primer and then I'd use regular latex paint.

The easiest method would be to use Chalk Paint! 😊

https://www.hometalk.com/diy/bedroom/furniture/painting-laminate-furniture-dresser-44234560?expand_all_questions=1

https://homeguides.sfgate.com/tips-painting-over-particleboard-84851.html

Try Pinterest, they have a way to paint laminate.

There are lots of posts here on painting a laminate shelf:

https://www.hometalk.com/search/posts?filter=paint%20laminate%20shelf

Here is some info for your project

https://www.youtube.com/watch?v=tkovvV6BONk

https://www.youtube.com/watch?v=5up7g7Ks4WA

Check out what I used to paint my kitchen cabinets and I didn't need to sand! This paint additive could really help for this project: https://happydealhappyday.com/how-to-paint-kitchen-cabinets-without-sanding/

Clean and scrap all the cabinet down paint the cabinet with a egg shell kind of paint because if you use a shiny paint you will see all scratches in the finish also use a small roller so you don’t get brush marks.

I painted some laminate and here's my tutorial on it https://chascrazycreations.com/faux-wood-grain-table/