The first thing and often overlooked step is to pick a type of primer. For those who truly care about longevity and quality when it comes to the painting job, we recommend a primer that is 100% acrylic. 100% acrylic primers can be considered the Mercedez Benz of primers - and although they are a bit more expensive, it is worth it in the end. Choosing a bad primer can easily cause a chain reaction of undesirable results, such as longer drying time, mismatched colors, blotchiness, clumping, brush marks, and flaking, which might force you to have to go back and redo the entire job. It's better to get it right the first time.
If you're planning to paint your whole house remember that it'll be a physically strenuous project. It might be wiser to consider hiring a professional painting company to do the work for your instead, as a large scale project requires a large amount of resources, time and energy. If you choose to do so, remember to make sure your contractor doesn't cut any corners by saving a buck or two by buying non 100% acrylic primer to do your house.
Remember, not only is your home your most valuable investment, but everyone on the block will see your house day in and day out- so its very important not to cut corners and do it right the first time. Doing the job right the first time saves you headaches and additional costs in the end.