There are many websites available to help you in your preparation and presentation of the Word of God that you proclaim each Sunday at Mass. You should come as prepared as you possibly can so that God's Word can "fill the hearts of the faithful."
Below are some links to help you in growing in your ministry.
This is a valuable site in that it gives you insight to what happens around the reading as well as how best to proclaim each reading.
A host of articles is contained in this sight talking about the ministry of the Lector
The United States Conference of Catholic Bishops has placed the complete Bible on this website as well as the individual readings for each day of the year. once on the sight, just click the appropriate date on the calendar in the upper right of the screen to access the daily readings. An additional plus for this sight is that you can access all the readings to be read aloud to you to help in pronunciation of difficult words.
This site, again from the United States Conference of Catholic Bishops, offers general principles and guidelines to help in your ministry.
This link will take you to a page on the website that lists the alphabet. By clicking the first letter of a word you may have trouble pronouncing, you can then click on the word and its pronunciation, both phonetically and aurally, will be provided.