Hi Rosie,
Welcome to the forum.
If you check out the sticky posts at the top of this forum you'll see 2 posts the "Please read...." and "Thinking of emigrating?" those are good places to start.
The "Please read" post also has the points test if you are thinking about going for a skilled independent visa. With that visa you have more flexibility but in some ways less security since people tend to come here without a job and get one once they are here. If you are not on the skills in demand list (see the "Please read" post) then it can take up to 2 years to get through the skilled independent visa, which is the route we used.
Have a look through the posts and let us know if you have any questions - I'm sure you'll have loads just like the rest of us
There are 2 agents who are sometimes on the forums - Alan Collett and Liana Allan. First consultations are usually free.
Regards,
Karen