Hi Muz,
Great fun to start off with a cheap web-cam and Registax (Freeware).
I have a Celestron NexImage - Very easy to use.
If you use Registax and lowish magnification (focal lengths 500mm to 700mm) then Registax will compensate for not so brilliant tracking - you may try a x2 Barlow if you like.
Here is an example of a web cam shot of moon craters - I usually take a quick pic for the record of where I'm looking.
Good Luck.
Jerry.