Work begins with the base. Before moving on to painting walls, you need to prepare the base. After this stage, there should be a flat and smooth wall. If you do not, then you will have to redo the work.
The process of preparing the base depends on the structure of the wall. If the wall is porous, then using putty you need to close all the holes. After the wall has dried, apply a primer layer. After that, you will need to decide on the paint. The modern market has a huge selection of colors. If you decide to create brilliant walls, then there are latex paints on sale. After you bought a paint, start painting. Start painting from the corners. After that, carefully move to the central parts. Do not rush during painting. Perhaps you want to create a drawing or pattern. Today it is pretty simple to do. Use a roller for painting, but it should be of high quality.