Primer paints may be oil- or water-based and are used to seal unpainted surfaces to prevent covering coats of paint soaking in. The appropriate type of primer should be used for the surface being painted - wood, metal, plaster or tiles. There are some 'all purpose primers' available which are designed for two or more of these surfaces.
Repainting your house is a tricky business. Some rely on painting companies to do the job for you. Hiring the house painting service may also cost you. But if you are planning to paint it yourself, you might want to consider the basics; and consider the time and effort you will put on painting your house.
One precaution: You can't paint with it in cold weather. The chemical reaction that transforms the water solution into a durable finish will not take place if the temperature is below 50°. (Conventional oil paints don't stick well in cold weather, either.)
When you have all the tools at hand, examine your exterior. You might find exterior painting problems, which could be any of the following: alligatoring, blistering, chalking, chalk run down, crackling, dirt pickup, efflorescence, fading, frosting, lapping, mildew, nail head rusting, paint incompatibility, peeling, poor alkali resistance, poor adhesion, poor gloss retention, surfacent leaching, staining, vinyl siding wrap, wax bleed, or wrinkling.
"Boxing" is a good method of mixing paints. Since paint is a mixture of solids and liquids, it is important that it be mixed thoroughly before using. To do this, the greater portion of the liquid contents of the can should be poured in a clean bucket somewhat larger than the paint can. Then, with a stiff paddle, the settled pigment in the original container should be loosened and any lumps broken up. After this, mix the material in the container thoroughly, using a figure 8 motion, and follow with a lifting and beating motion. Continue stirring the mixture vigorously while slowly adding the liquid that was previously poured off the top. Complete the mixing by pouring the paint back and forth from one container to the other several times until the entire amount is of uniform consistency.
Now take a look at the form of the canvas - you might take it for granted, but it does influence the subconscious feeling you get when enjoying a piece of art. Round and oval canvases produce the impression of serenity and completeness, they are often picked for feminine, soft portraits, like Ingre's "Turkish bath". Rectangular paintings - vertical or horizontal - are more complicated. While widely used in landscapes, the horizontal format may serve to diminish the figure portrayed, impose or convey some limits, as you can see in Vrubel's "Demon". Vertical format ensures monumentality and steadiness.
No single product can do all these things. There are several types, all available under a variety of trade names. The trade names are, to put it kindly, confusing. For example, two brands of the new paints use "rubber" in their trade names, yet neither is a rubber-latex paint and each is actually an entirely different type of paint from the other. To get the right paint you have to read the fine print on the label and find out what is actually inside the can.