I recently did a two hour bike maintenance course at my local Evans (trafford park, Manchester). I know that the more experienced on here will be more than capable of servicing their bike and maintaining it, however, I found this little bit of input invaluable. Best of all, it was free!!. I paid a £10 deposit to secure a place and this was refunded to me when I'd done the two hours. What an excellent service. If you visit your local Evans they'll tell you when the courses are running and what places are available. Well worth the effort.