1- Sand (If you don't have a hand sander, Harbor Freight carries them for under $20). Simply sand most of the pre-existing lacquer or "sheen" on them. Don't worry about grooves. This does not need to be perfect, it just needs to make the surface more adhesive.
2- Paint: Use a paint with primer in it. This will make it adhere better to your wood, cover up darker coloring of wood or previous paint and eliminates the primer step.
*Note: when picking your color go slightly lighter and brighter than what you want the finished product to be, because step 3 will mute and darken your color.
3- After paint completely dries apply antique glaze with a brush to cracks and grooves. Using a potato cloth (white thin dish drying clothes) to wipe away excess glaze leaving cracks and grooves saturated. After, if you desire a more antiqued shade wipe the flat surfaces evenly with the used, glazed potato cloth.
*Note if you desire a more worn look, sand edges, corners and random surfaces before applying glaze.
*For added character try removing glass or wood in cupboard doors and replacing it with chicken wire, hammered tin or any other desired material, by simply using a staple gun to fasten it to the inside of your cupboard!