"Does that mean we should still be sacrificing animals for God. See I just wouldn't be able to do that."

Since Judaism has discontinued animal sacrifices almost 2,000 years ago(when the second Temple was destroyed in 70 CE) it is hard even for observant Jews to relate to the concept of animal sacrifices.

"Also I can't my head round the homosexuality bit. I know there are and maybe always been unacceptable practicies of this, but if some one through hormones or whatever, maybe akways had those feelings, do we turn our backs on them."

First of all, just because someone has a physical attraction
for someone of the same gender does not mean they must act on it.

" just find this confusing, cos if we did that, wouldn't we be being judgmental.. "

Human being need to be judgemental when it comes to fundamental issues if they want to preserve their sense of morality. How would you feel if you saw a bumper sticker that said "if you don't like abortions then don't have one"?

" guess I question things a lot, but I'm interested. Sorry I'm not sure if your saying that true believers must do this or in the present modern world the rules don't have to apply totally."

The seven Noahide Laws apply to all humans, and all humans should observe them. Observant Jews observe many more commandments. There are 613 of them, although many do not apply today since they deal with animal sacrifices and the Temple(the second Temple was destroyed in 70 CE).

http://www.jewfaq.org/613.htm