I have lost my manual to my sky watcher telescope ,where can i go to down load one ,thank you

Check the manufacture. If you didn't have it too long take it back to T...R...US and go elsewhere and by a good scope.

Go here: http://www.celestron.com/support/manuals-software

Try here = http://www.google.com/search?q=Celestron+S11740+Sky-watcher+12-inch&sourceid=ie7&rls=com.microsoft:en-US:IE-ContextMenu&ie=&oe=&rlz=1I7NDKB_enUS527

Obtain a user manual for your type scope from
http://www.skywatcher.com/swtinc/customer_support.php?class1=1&class2=130

Here are all of Meade Telescope manuals--

http://www.meade.com/manuals/index.html

Find one under either REFLECTOR or REFRACTOR that is similar to your scope. There are no manuals available for National Geographic, but they all assemble in a similar fashion.

All of Bushnells manuals are on this web site.

http://www.skywatchertelescope.net/swtinc/distributors.php

Look down the page for your model.

The manual will have assembly instructions BUT WILL NOT help you learn how to the use the telescope to find objects in the sky.

DO NOT USE THE barlow. Put the eyepiece with the largest number written on it into the telescope. Practice focusing on a distant object during the day time.

It can be cleaned, but I would recommend you see if there is a local astronomy club, whose members can help.

Most of these small telescopes DO NOT have a manual-- however this web site might help you learn how your telescope works--

http://www.uk-telescopes.co.uk/beginners_guide%20to%20telescopes.htm

Also this article--
http://www.geocities.com/capecanaveral/launchpad/4515/telebeginnger.html

Try to find a local Astronomy Club and attend their public star parties-- bring the telescope and they will help you with it.