Some good materials and stuff

If you are looking for more to read, All of the books listed here provide invaluable advice for using the law of attraction in all aspects of your life. These books are available for purchase from online retailers.
Claude Bristol, The Magic of Believing

Henry Drummond, The Greatest Thing in the World

Christian D. Larson
The Great Within
How to Be Well
How to Heal Yourself
How to Stay Young
The Ideal Make Real
Leave it to God
Just Be Glad
Mastery of Self
The Mind Cure
Thinking for Results
Your Forces and How to Use Them

Dr Joseph Murphy, The Power of Your Subconscious Mind

William Walker Atkinson
Mind Power
Thought Vibration or Law of Attraction in the Thought World

Wallace Wattles, The Science of Getting Rich Free eBook
Charles Haanel, The Master Key System Free eBook

I should point out, that the last 2 are for higher levels Wallace is for Intermediate and Charles is for advanced Secret users.

Now for those who need to get more money and have difficulties in concentrating on it or just want to achieve it easier, then you should print this out and write there all information you want to get from the Universe. Print the check, fill in your name and the amount you wish to receive in your chosen currency, then sign and date it. Place the check in a prominent position where you will see it every day! Every time you look at your check, believe and feel that you have the money now! And that's how to achieve it, but remember tell others (It's best if they are your friends) your goal and the deadline. But the deadline should be believable for you.

http://www.thesecret.tv/the-secret-check.html

Take care! And good luck in reading and visualizing!