1) I don't belong to an organisation because I think it's impossible to create such an organisation centered around a belief without it turning into a mess of rules and regulations. Belief turns into identification and position which eventually turns into control. Bhudda never said monks had to shave their heads, live in temples and wear orange robes, but they do now, and I would consider them to be some of the most enlightened.
2) I tend to "connect" with "god" by being present in each moment, whenever I remember to I bring myself fully into the moment and feel the connection with source and everything around me. I can be anywhere, the office, on the train to/from work or at home on the computer. What is important though is doing it whenever I can, most often on the train to work.
3) My biggest challenge is expanding my sprituality and avoid being squished by the "unideals" of the western world. I work in a rather boring office job with people who don't seem so spiritual. Being centered, grounded and truely myself in all that is a real challenge. Being able to live a western life and be spiritual at the same time.