The tools needed will largely depend on which model you have. I have an Electra and it need lots of different size spanners, some are not common. To get the rear wheel off you need a 24mm flat ring spanner. To adjust the chain you need a 30mm ring. 18mm is used quite often and you will need that to perform a standard maintenance. I suggest you do all the servicing things you thing you might want to do, and make sure you have the tools for those jobs. For some reason there is a set of tyre levers in the bikes tool kit, but no spanner to get the wheel off. The supplied tyre levers are useless, get a pair of heavy duty ones with a good bit of leverage. I was shocked at the weight of the tools needed, being my old BMW toolkit plus the Enfields toolkit plus about double that again in weight of other tools.

thankyou for all the help so far, hopefully i'll work it out
xx

And the essential
 

And a Leatherman...

You can probably fix / bodge the job with a Leatherman most of the time - it'll be a better quality tool than most of the mechanics you hire to do the work will have... especially because it's so easy to tighten up that loose bolt which otherwise you would leave until you stopped for the night....

Tony