Let me answer your question by explaing an Orthodox conversion process. Four commitments are required: one, the candidate must live proximate to and participate in a local Orthodox community; two, the candidate must pursue a course of formal and informal Jewish education; three, the candidate must increasingly observe Jewish law, custom and practice; and four, the candidate must have a rabbinical sponsor who will set up a network of partners to work with the conversion candidate and empower the candidate to be responsible for his or her own advancement through the process. in your particular case, I would add a fifth requirement -- namely, that you and your husband pursue parallel conversion tracks.
Living within walking distance of an Orthodox community is essential, as Jewish life cannot best be learned from books or classes, but needs to be observed and experienced firsthand, such as learning how Jewish parents conduct their Shabbat table or how a Jewish homemaker koshers and prepares for Passover. While the particulars of observance can be learned from books, the totality of experiential Jewish living can only be internalized by participating in an observant, learned and learning community. It is important for a conversion candidate to have multiple teachers in order to help facilitate a more comprehensive education, as well as to recognize legitimate variation within the observant Jewish world. Requiring the candidate to live within walking distance of an Orthodox community not only makes requisite Shabbat observance possible, but also increases his or her communal integration.
Developing a broad base of friendships and connections within the community will also deepen the candidate’s initiation into and identification with the Orthodox community. Likewise, while it is important to foster a good relationship between a conversion candidate and his or her rabbinical guide, multiple lay and professional mentors and teachers will properly cultivate the candidate’s Jewish bond to Hashem (God), Torah and community, rather than a dependent, charismatic attachment to a rabbinical figure. In sum, an effective conversion process requires living within a supportive and inviting community that becomes the candidate’s teachers, having a defined course of self and partnered study and enrollment in community classes, and applying one’s formal and informal learning increasingly to personal religious practice, all under the supervision of a guiding rabbi. This holds true whether one converts in the United States or in Israel.
There are several reasons why you and your husband will need to pursue this together. First, if your conversion process would be successful, then you would no longer be the person who your husband chose to marry. And if he would stay the same, he would no longer be a person to whom you could stay married (since it would be an intermarriage) or likely with whom you would want to stay married since you will not share the most fundamental and essential foundational values to your home.
My advice would be for you and your husband to make a joint decision. Should you choose to proceed, you should consider exploring local Orthodox Jewish communities, meet with their rabbis, and then find a way to live within walking distance of the Orthodox Jewish community that best suits your journey. Begin a conversion process there and establish relationships. And should you not be able to commit to this process jointly, you should strongly consider living your life according to the seven Noahide laws that form the universal covenant that God created with all humanity. For more information, see http://asknoah.org/
God bless and all good wishes for a successful journey.
[A large portion of this answer was adapted from a similar answer that I wrote at http://www.jewishboston.com/Ask-A-Rabbi/blogs/5678-how-do-i-convert-to-orthodox-judaism]
Answered by: Rabbi Benjamin J. Samuels