In order to improve your reading skills you need to be exposed to a wide range of texts. You can read graded readers adapted to your level (Upper-intermediate) and websites with news of your interest. Below are some links:
Do you think you need extra lessons to pass the FCE? You can find very interesting courses in this website.
Now they offer a specific course for FCE and you can have conversations
with native speakers as often as you want because they have a flat
rate. You only need a computer, a micro and headphones.