There are plenty of products on the market to prevent ticks and fleas. You just need to pick the right one for your pet and your area. You can even call a vet or pet shelter for advice on a good product if you need help choosing.
take a match, light it, let it burn for like 7 seconds and then blow it out and quickly press it against the ticks. the heat from the match should irritate the ticks and they should drop off. i'm not saying that it is the best way to do it. you could accidentally burn the dog or the tick might prove to be stubborn.
You should remove the ticks and you should do this by running your hands all over the body. Wear latex gloves and use a pair of tweezers to grasp the ticks. After tick removal, clean your dog's skin at the bite area with mild soap and water. Go to http://dogs.about.com/od/dogandpuppyhealth/a/ticksondogs_2.htm.
check with your vet. your dog's last vaccines injections may have the lyme's disease shot included. you got to pull those things off using tweezers and be sure that you get the all of the long sucker and head out. there will be some bleeding.
i have recently heard that the product by Avon called skin- so- soft will help prevent your dog from being bitten. apparently it is safe for pets. omg..i hate those things. the very thought of them coming into my house hitch-hiked on my dog gives me the willies. still i carefully check and groom my dog each time he comes in.....and then ...omg....myself too afterwards. did i mention i hate those things ????????