Marcos, your question is too broad. You don't have any details on your profile, so I don't know where you live, but there are all kinds of remodeling projects. My suggestion is to talk to people that have remodeled what you're thinking about and if they have pictures that you can look at - before and after shots. Word of mouth is usually how I do things.
If you bought a home and used a realtor, they also would have suggestions. Think about what areas of your house you want remodeled and then start digging on the Internet for who is available in your area and reviews about their work.