If you want to do interior painting by yourself, you should to prepare for a lot of work. If you have never do it earlier, better get to know how to do it in a appropriate, otherwise final effect maybe miserable. There are a lot of web pages in the network about it, you might ask several professionals there. Also, you should get a special gazette about renovations. You do not have to be as qualified as painting contractors, but any type of wall need another sort of paint. For example, for your kitchen and bathroom better select anything waterproof, otherwise it could be devastated within few months. If you own a huge dog, who like to leave stains of it paws on your paints, latex will be perfect, because you might wash it. Whatever you select, be sure to fallow the directions step by step. And likely you will must to take couple days free in your work.
Different option is to hire painting contractors. Those men are very qualified in their branch, they will no what to do, even if your wall have to be entirely renovated – see. Regrettably, this method would be much more costly. You will have to pay not just for your paints, but also for the job of specialists. But the final effect should be rewarding for you. Also, they could make it much more quicker then you, cause they used to do it, so your entire apartment maybe repainted within couple days. Different thing is that not anyone want to have a bunch of strange people in their home, when you are coming back home from job, you prefer to be by yourself. Also, you might hit on some fake painting contractors, so you better select someone by recommendation.
Painting of your apartment is not a pice of cake. If you have no solutions how to do it, maybe consider to hire specialist. Otherwise, you need to prepare for it, read some good magazines about interior renovating, ask some questions via Internet. And get ready for some free days at work, because it would last even entire week.