Summarize the following:
The best tool to use when painting your ceiling is a thick-nap roller with an extension pole. You can find all of the supplies that you’ll need at a local paint-supply store. Most large hardware stores will also sell paint and painting supplies.  While you could use a paint brush, it’d make for a messy job. High-quality lambswool paint rollers will ensure a smooth layer of paint without bumps or bubbles. The length of extension pole that you’ll need depends on the height of your ceiling. If your ceiling is a standard 8 feet (2.4 m), you’ll only need a 2 ft (0.61 m) pole. If you have a higher, 12 ft (3.7 m) ceiling, opt for a 6 ft (1.8 m) pole. This style of paint is different than standard wall paint. Flat paint is the best type of paint for ceilings because of its smooth viscosity. Flat paint will also hide any imperfections in the ceiling. You will also need to choose a color of paint for your ceiling. Most ceilings are painted white because the color makes a room seem bright and large. When selecting a tone of white, consider which particular shade of white will go best with the color of your walls. Relocate the majority of your furniture out from under the ceiling and into a different room in your apartment, since paint may drip on un-moved furniture. For example, if you’re painting the ceiling in your living room, move sofas, chairs, and tables into your kitchen or bedroom.  Moving your furniture may not be possible if you live in a small apartment or have extremely heavy pieces of furniture. If you find yourself in that scenario, drape drop cloths over furniture to protect the upholstery from dripping paint. Lay a thick drop cloth evenly across your floor once you’ve moved your furniture out of the way. This will protect the floor and prevent ceiling paint from staining your carpet or tile. Also cover your windows and windowsills with drop clothes if you’re concerned that paint may drip on them. Do not use a plastic sheet on your floor, as it will bunch, crinkle, and shift. Plus, thin plastic will hardly protect the floor from paint. Purchase a 180-grit sandpaper sponge from your local hardware store. Run the sandpaper sponge lightly across your entire ceiling using a circular motion. This will remove any dust and grime that has built up naturally over time. Then, dampen a rag and run the damp rag across the surface of the ceiling to clean up the dust from sanding.  If you do not wipe off the sanding dust before you begin to paint, you’ll apply paint to this dust instead of to the ceiling itself. Do not sand a textured ceiling. Stick the adhesive side of the painter’s tape firmly against the edge of the trim where it meets the ceiling. If your wall has no trim, butt the edge of the tape directly up against the corner where the wall meets the ceiling. Applying a layer of painter’s tape to the wall beneath the trim will prevent you from accidentally applying paint to the top of your wall.  If you're going to paint your walls after you paint your ceiling, you should still mask the trim. This will preserve an even finish to the ceiling paint. Press the adhesive side of a strip of painter’s tape tightly against the metal sides of the light fixtures. Make sure that the upper edge of the tape is pressed against the ceiling, or paint may leak through and stick to the light fixture. When painting in these areas, use an angled brush to paint as close as possible to the fixture itself so that there won’t be any un-painted gaps beside the fixture once you remove the tape. Use a primer with stain-blocker for best results. Pour the primer into a paint tray and glide the roller across the top until it’s covered in primer. Then apply a single, even coat to the ceiling by rolling the primer on in straight lines. Allow 30 minutes for the stain-blocking primer to dry before you proceed to painting the ceiling.  Priming ensures that you'll only have to give the ceiling one coat of paint. A primer will help stick to the ceiling and absorb the coat of paint. Stain-blockers cover up unsightly stains on a ceiling, such as watermarks, smoke, and nicotine, and keep them from bleeding through into the paint after the primer has been applied.

Summary:
Purchase a lambswool roller and extension pole. Choose a flat paint formulated for use on ceilings. Move your furniture out from under the ceiling. Cover your floor with a drop cloth. Sand and wipe down your ceiling before painting. Mask the area around the trim with painter’s tape. Wrap painter’s tape around light fixtures before painting near them. Apply a coat of stain-blocking primer to the ceiling before you paint.