If you can give subq shots, you can use the IV kit to give Ringers. Really *very* simple. There are two main types of IV kits. The disposable one for bags, and the rubber one for bottles. You can get lactated ringers in either bottle or bag at my vets. I prefer the bag myself.
This one is for bottles and comes with a big needle. By the way, if you have to give CMPK in large amounts, this is the perfect kit for that. It works for the bottles that CMPK comes in. Easier in my opinion than using a 60 cc syringe and stabbing them multiple times. When you've finished using it, you just rinse with alcohol and let dry.
http://www.jefferslivestock.com/iv-s.../LIV/cp/16105/
This one is similiar to the one I get from Sally and it works for bags. I can't find the exact one I use pictured online. This one is called "disposable", but I rinse it out with alcohol and re-use it many times, just switching out the needle for a new one. I use an 18 guage needle to give ringers subq.
http://www.pbsanimalhealth.com/detai...et/401-32.html
I give the ringers over the ribs, in front of the shoulder, on the neck. Frankly, whatever I can get to easily. Ringers should be warmed to body temp before use. You do not have to monitor the flow as you do if you are giving something in the vein. And you won't overdose. I give them until the body stops absorbing them rapidly.
It really is nice to have someone show you how to put everything together the first time.