Right well hello! i'm living in the UK and thinking of spending some money to get a UAV drone!

what i want is a remote controlled UAV that i can fly through the use of a monitor, ideally i want a very basic setup, but with the possibility of flying 3 miles possibly when i am a competent flyer.

ideally i need a list of stuff i need to buy for a FIXED wing (like a airplane style) UAV, i don't find helicopters that attractive for myself.

i've looked across the web at certain parts like motors and batteries and such but have no idea where to start, so a beginner list stating costs of stuff that is all ESSENTIAL would be a great help as well! :)

is it possible to transmit control signals and video signals through the same transmitter/antenna?

i am not to familiar with all these abbreviations such as APM 2 and such like that, so if you do want to use these please please go gently and explain them as simply as possible (i'm not a stupid person and can learn quickly, i just have no knowledge at all of drones)

any mistakes people have made along the way that i should avoid doing too could be helpful, thanks in advance guys (and/or ladies)! :D

-Martin