Your best bet is to have a chat with someone at the BLF - give them a call on 03000 030 555, which is the same rate call as you pay for 01/02 numbers. They'll usually take some details and arrange to call you back. They have trained advisors and nurses who can go through this with you.
Above all, don't panic. Although it's never good news to find out you've been diagnosed with a chronic (long term, incurable) illness, it is not the end of the world. As you will find out here, there are many of us who have been ill for many years and through being diagnosed have been able to look after ourselves better, probably outliving some who don't have the illness!
Don't believe all you read on the Internet either. There are some quite scary sites out there that are full of doom and gloom, and even some with questionable remedies. Visit the main BLF website as a starter - blf.org.uk/Home, perhaps find a local Breathe Easy group to go to.
By all means ask questions here if you want to know things, most of us are only too happy to respond.
In a nutshell - Tiotropium (Spiriva) is a once a day dose that helps to keep your airways open. Salbutamol (Ventolin) is used to treat immediate symptoms, providing relief within a few minutes, should it be needed. Between the two you shouldn't suffer any nasty bouts of breathlessness as long as you take it easy and don't try to overdo it.
One of the things you will be asked is about smoking, if you do smoke then stop. Although smoking is often given as the biggest reason for COPD, it's not the only one, Pollution, working in certain environments or with materials like asbestos and other dust, pneumonia and other illnesses can all be a factor.
Have a read around on here, clicking 'clogs' or 'questions' at the top will give you pages of reading. Many of your questions will have been asked already.