I bought a used Galileo FS-120DX reflector telescope on a garage sale. It is missing the eye-piece, instruction book, screw to attach the scope tube to the tri-pod and possibly some weights that attach to the tube (I've looked at a photograph of it on-line and there are two things that look like weights/hand-holds attached to the tube near where it mounts onto the tri-pod. Any idea where I can get this stuff??

Only Galileo scopes will have replacement parts. Contact them here:

http://www.galileosplace.com/

This is a very simple reflector on an alt az mount. You can contact Galileo scopes for a manual:
http://www.galileosplace.com/

or just download the very similar scope by Tasco here:

http://www.tasco.com/products/manuals/Luminova40-076420Inst.pdf

Contact Galileo scopes directly:

http://www.galileosplace.com/

Contact Galileo telescopes here for help:
http://www.galileosplace.com/

Assuming the batteries are OK, there should be adjustment screws on the finder for moving the red dot around.

Focus the telescope on a distant object, then without moving the scope adjust the dot on the same distant object.

This is a small reflector style telescope. The end with the focuser and the small finder scope is the UP END -- the mirror is on the bottom toward the ground.

Put the eyepiece with the largest number written on it into the focuser. Take the scope outside during the day time and practice focusing on a distant object.

Read my TIPS on my profile page.

Here is the web site for Galileo telescopes-- they may have a manual. HOWEVER the manual only contains assembly instructions. It does NOT tell you how to use the telescope, how to focus, which eyepiece to use, and how to locate those SMALL objects in the night sky. Sky objects are about the size of the tip of your finger held at arm's length. The scope must be pointed directly at them to see anything.

Buy these two books-- "Turn Left at Orion", and "Nightwatch".

Try to locate a local Astronomy club to help you with the scope-- attend their meetings and star parties.

You can contact Galileo scopes directly here;
http://www.galileosplace.com/

Some of what you need may be available at a well stocked hardware store.

Eyepieces, and barlows can be bought from many on-line retailers. Here is one:
http://agenaastro.com/

The CD rom is probably just a planetarium software. You can download free software here:
www.stellarium.org

The scope does not need computer software to operate. However, you will find the free software above very helpful in learning the sky. Color filters are really NOT very useful; only the moon filter is needed which you can buy from the retailer listed above.

Actual proprietary parts like the accessory tray must be bought directly from Galileo telescopes. But a hardware store will have springs and bolts and nuts.

This is a reflector style telescope. The MIRROR is in the base! Light enters the front near the focuser and goes down the tube and bounces off the mirror and back to the front and through the eyepiece. The EYEPIECE end is pointed up.

Your scope TUBE should look like the reflector telescope on this web page:

http://www.amazon.com/Edu-Science-Astro-Nova-102-Telescope/dp/B001NLOQN2

Wish you had NOT bought this telescope. For about the same price you could have bought this:
http://www.telescope.com/control/product/~category_id=classicdobs/~pcategory=dobsonians/~product_id=08942

The scope above has a 6 inch mirror which is almost twice the size of the scope you bought.

This is a reflector style telescope with a MIRROR in the bottom of the scope tube, and a smaller tilted secondary mirror near the front of the scope tube.. Put the eyepiece with the largest number written on it into the focuser. During the day time take it outside and practice focusing on a distant object. DO NOT USE the 2x barlow if you have one.

The moon should be your first target at night. The eyepiece with the LARGEST number written on it gives the LOWEST magnification.

Be sure the lens CAP is not still on the front of the telescope. The FOCUSER end is the FRONT of the telescope. It should look like this:

http://www.angelfire.com/80s/sixmhz/telescope.html

You can buy eyepieces from many internet retailers here are two:

http://www.agenaastro.com/

http://www.optcorp.com/

you can get some help from:

http://www.galileosplace.com/Instructions/FS-85DX_Instruction.pdf