Try to learn syllabes first. That is how we teach native-speaking children. And when you are reading, try to devide the word into it. По.про.буй.те. чи.тать. слог., а не сло.во. це.ли.ком. а по.том мыслен.но. со.е.дин.ять в сло.во. It seems more difficult at first glance and the reading will last longer, but it is the better way))))

some words are spoken not the way they are written: корова => карОва

Only practic can help you. You need to read more. Tell me, what letters are especially hardly for you? I will try to make a method

There are the stories vith the division on syllabes for children here http://jirafenok.ru/chitaem-po-slogam/rasskazyi/