Where's the best place to obtain celebrity addresses?
There are numerous websites on the Internet (just like this one) which list successful addresses.  However, it's always worth remembering that celebrities change management companies pretty regularly, and addresses that have worked for someone else, may no longer be current.  In the address section of this website, I make sure the date sent and the date received are shown.  This is pretty important, as you could easily end up using a ten year old address list which would have a huge amount of errors.

What do you write in your letters?
This is a pretty personal thing and depends a lot on the individual.   Certainly, for the best success rates, it is important to show that you do know a little about the celebrity in question.  Don't end up writing pages and pages, as the celebrity (or their secretary etc.) simply won't have the time to read it all.   Conversely, "I thought your latest film was brilliant" is a little too short and too vague.  Always make sure your spelling is correct and your grammar is good.  And most important of all, be polite.  Don't be afraid of admitting exactly why you're writing and what you're after.

Do you print or handwrite your letters?
I must admit, I print virtually all my letters.  Some collectors claim much improved results when they handwrite the letters and that probably is the case.   Doing so does show effort on your part and can make your letter stand out from the crowd.  I know one collector that always uses coloured paper and pens (black paper and gold/silver pens would you believe!) and she swears that she gets much better response rates.  Make certain if you handwrite, that your writing is clear and legible.   If not, stick with printing!

Do you include a SAE?
Always, always, always!!  Never ever send off a request without one.   Remember that the celebrity (in most cases) will be providing their own photograph for free.  The very least us collectors can do, is provide return postage.   Failure to do so could easily make celebrities refuse to answer written requests.

How do I write to celebrities abroad?
The problem is providing return postage and you've got two main options.
(1)  Include "International Reply Coupons" with your letter.   These are sold at all Post Offices and cost 60 pence each.  They can be exchanged in most foreign countries for the equivalent value in local stamps.  When writing to the States for instance, it is usual to include three IRC's with your letter.
(2)  Include sufficient stamps from the country in question.  Many collectors around the world exchange stamps, or even use them as "currency" when purchasing autographs.  Again, using the States as an example, find a US collector looking to write to UK celebrities.  Agree an amount in both British and US stamps and exchange.