What are the things I need to do before painting?

If you don't want to tell the truth, at least tell the same lie to everyone. Keep your lies non-specific. Say "I went out", rather than "I went to watch...

If you consider all the pieces you have to cut, that's a safe bet. If you can do the layout better than I can, you may be able to get...

Apply new caulking before you paint and finish the walls. This helps you achieve a smooth, professional look.

Remember to use quality products that will last, don't go cheap. Understand the substrate and find the products that are suitable for it. For example, if you have vinyl siding,...

If it's finished over with a clear coat and lacquered, you definitely want to remove that by sanding it down or using a chemical stripper. If it doesn't have a...

Yes, this is a good idea. Particle board is a pretty rough material, so take some time to sand any rough edges before you get started.

Apply a coat of shellac primer to help prevent the wood from staining your paint.

You want to scuff it up to a point where the primer is going to be able to grab and adhere to it. Sand the area until it becomes a...

I recommend sanding down the wood for a smooth finish. After, apply primer, sanding in between coats of primer in order to get a better adhesion to the paint.