Hi, I've been playing for quite a while and I've just started getting into Slash's lead style (from guns n roses), and I was wondering if anyone had any tips on his style - eg the scales he uses, trademarks, licks etc?

Secondly, as a start, I learnt the lead solo from 'Sweet child of mine' by guns n roses, but I cant figure out what key the song is in and what scale is used in the solo.. does anyone know? I think the key is D... dunno what the scale is though :(

Any help would really be appreciated!
P.S sorry if this is the wrong forum but the other ones looked kinda inactive,
Tnx, cya