One of the best methods to practice reading Spanish is to use a dictionary very minimally and focus on contextual clues and familiar vocabulary to aid comprehension. Understanding of the text overall is the goal, rather than the meaning of single words or grammatical rules.
To practice reading, start with a small, digestible text and read it through one time without using a dictionary. Locate key phrases, not necessarily single words, that appear to be important to the text or repeat often throughout. Read the text again as necessary and try to comprehend these key phrases intuitively before referencing a dictionary.
Using a reading exercise that includes key phrases and vocabulary from a fluent Spanish speaker is very useful. Being familiar with the phrases before reading the text aids in comprehension.