The best kept secret in Masonry, is that there are no secrets! Everything about Masonry, our goals and objectives are published in books, and on many excellent websites. All of our charitable work is placed out in public, and is there for all the world to see. The lessons of friendship, morality, and brotherly love, are likewise published openly, and no attempt is made to conceal of our tenents.
Masonry inculcates into its adherents certain standards and precepts. Honesty, Virtue, and an uncompromising rectitude of Conduct, and amont these values. In the process of becoming a Mason, the individual is taught certain moral lessons and truths. Often, symbolism and allegory are employed as part of the educational process. Other instructional tools are used, including tools of the building trades, and other more modern methods, like videos and slide projectors, are becoming popular as well.
I realize that I cannot present the entire spectrum of Masonic instruction in a short email. I encourage you to continue your research on the internet, and by asking your questions on this forum. Remember, the best way to learn about Masonry, is to submit a petition, and then take the degrees. You will never be asked to join, the decision must be made on your own, without undue influence or persuasion. Masonry does not seek men, Men seek Masonry.
So- the answer to your question is NO- There are no secrets in Masonry.