. I am just back, but was going to post to say that I'm sure people will be along soon.
There is such a huge range of different denominations and styles of worship that it's hard to know where to start. There will be others here who can respond better than I can.
I am 'bog-standard' CofE, but even within the Anglican church you get a huge range of styles from - err - 'happy clappy' (I never know if that's a bit offensive... so apologies to anyone at the evangelical end of things that I've just upset!) to very traditional (quite old-fashioned language, choir, sung responses, bells, incense). Some may have Holy Communion every week, others once a fortnight or once a month. Either way services will consist of songs/hymns, prayers, Bible readings (usually one from the Old Testament and one from the Gospels, and maybe also one from one of the other books of the New Testament) and a sermon or homily (which will often take the form of an explanation of one of the readings - most often, IME, the Gospel).
In general (huge generalisation here), the non-Conformist denominations (e.g. Methodist) will tend also to have many of these elements, but may be 'freer' in terms of not following a set pattern of service, though they will vary in how 'free' they are. My experience has been almost wholly in the CofE (with a bit of Methodism thrown in), so I can't be a lot of help here. Sorry.
I have heard good things about the United Reformed Church, too, and the dh of one of my friends is a URC minister and is extremely socially and (as far as I can tell) theologically liberal, and someone who clearly lives his faith and kind of exudes 'goodness' iykwim. That's not a lot of help to you, though, I'm sure... I've never been to a URC service.
I'm talking rubbish now, so will shut up. Just keeping you company till someone more informed comes along! Wishing you luck with your journey of exploration.