How can you find the right spiritual path? I'm an ex-christian searching for another spiritual practice or path. Recently I've been really interested in eastern religion. But I don't know much about it, and it's very complex. Any ideas?

You might take a look at Shintoism. Lot's of websites and books on the subject. Very interesting. This is from Wikipedia :

1. In modern scholarship, the term is often used with reference to kami worship and related theologies, rituals and practices. In these contexts, "Shinto" takes on the meaning of "Japan's traditional religion", as opposed to foreign religions such as Christianity,Buddhism, Islam and so forth.

I guess it depends on what you are looking for. Are you looking for a different social setting than what you presently have? Do you want to worship the creator? Are you looking for friends? Do you have a standard that you are trying to live by? I ask this because many people have been turned away from what they called "Christianity" because of the traditions that are taught conflict with a sincere desire to do what is right. You may just want to hear what you creator has to say about worship.

Try Confucianism you can find the Analects of Confucius  online. Its a Chinese spiritual philosophy

I'd recommend trying the Eastern Orthodox version of Christianity such as Greek, Turkic, Coptic, or Russian orthodox. Its still Christianity so you won't be too far away from what you're familiar with but its extremely Eastern. Of course if you want to completely dive away from Christianity altogether I'd say that Buddhism would be a peaceful choice, however you would have to refrain from sexual contact /: