Although you may not feel comfortable going to church, it doesn't mean you have to miss out. Now days, they have church on TV as well as Christian Radio where you can enjoy sermons, teachings, christian music all from home which can help build your faith. And yes, there is of course Internet Forums, where you can fellowship online with other believers.
The important thing is that you keep going in the faith, keep growing in God and letting God work in your life. As for dress, I think in the NT, the only requirement was that people dress modestly (1 Tim 2:9).
Maybe if you can find a small group near you that you can fellowship with, that may be a good idea or you can start your own group with a few Christian friends who live near to you?