How can I achieve classic comic book coloring and halftones in Photoshop?

To achieve classic comic book coloring in Photoshop, use flat colors for base layers. For halftones, apply a 'Color Halftone' filter (Filter > Pixelate > Color Halftone) to a separate layer or selection, adjusting the max radius and screen angles for CMYK. Alternatively, use a 'Pattern Overlay' layer style with a dot pattern, or create a custom brush with halftone dots. For a more authentic look, work with a limited color palette and use strong black lines, mimicking the traditional printing process.