yellow,
I fully admire your spirit to think ahead and your desire to help your soon-to-be husband adjust to a new life in a totally new environment.
Although there is really no best way to help him adjust because everyone adjusts differently, one thing I can think of right now is to communicate a lot with him about these things. Explain to him clearly where you both will be living. Ask him what his concerns are. More importantly, ask him what he thinks you can do to help his adjustment. And share your expectations with each other.
If there are specific things or activities your husband likes very much and are relatively easy to access in the US, see if you can make those available to him once he is here. I have read some threads here where the US wives subscribed to sports channels and/or radio stations for their hubbies to enjoy.
At the end of the day, remember to give him a lot of time. Marriage in itself already requires a lot of work and discipline, on top of love and commitment. Adjusting to marriage in a new country is a different and more complex ball game altogether.
I sincerely and wholeheartedly wish you and your darling all the very best in your new life together.