Hello Allan in Glasgow - welcome to the forum!
First thing's first - need to sort out diet and a training routine.
If you like you can read up on both first and see what changes you can make yourself as ultimately you know what suits you best.
You can have a look around the forum or read some of the articles: http://articles.muscletalk.co.uk/
or newsletters: http://newsletters.muscletalk.co.uk/
You can post up an example of your diet up in the diet section, i.e., just give us some detail on what a normal daysworth of food currently looks like. Like this:
9am - 2 eggs, bacon, wholemeal toast, orange juice
12am - chicken breast, broccoli, baked potato
1pm - Train
Include training times as well if you can.
As for training - have a look in the routines section - there's a massive thread you can look at for some ideas http://www.muscletalk.co....-Routines-m854463.aspx
Try to see what sort of routine you might like and can follow depending on the facilities you have access to.
If you've got any more specific questions don't hesitate to post them up in the relevant forum!