I agree with all the above advice and suggestions. I had to have a permanent colostomy years ago, but due to my crohns, I now have an ileostomy. A support group is a great idea. even if it is temporary. my first colostomy was temporary, due to non-healing fistulas. But my situation is different from yours I have had crohns disease for a long long time.
It can be a little overwhelming at first, but like the advice offered here, it is the best thing to do all of your ostomy care and maintenance yourself. you will get used to it, and the more you take care of it yourself the easier it becomes. Another tip: after you have the surgery they most likely will have put a clear/see-through pouch/bag on you, and it may be rather large. dont let this scare or upset you. There are many great pouches (they are technically called "appliances") on the market that are smaller, and that are not see through. the reason they put on a see through, is so that they can monitor the ostomy site without removing the pouch. I dont know if I am allowed to mention brand names on this site, but one of the very best pouches I have found are made by Convatec/Squibb. They are called "active life" and come in an opaque, or non see through type. I can even give you the stock number of the particular pouch I have been using all these years. Of course there are many others out there too, and like the above advice, talk to one of the ostomy experts on staff. Ask your nurse if you can have a trained ostomy visitor come to speak with you. I am a trained ostomy visitor with my local ostomy chapter support group. There is a national ostomy organization which publishes a newsletter. The newsletter is full of new ideas suggestions, and products.
I would love to hear from you, and help in any way I can. take care now, and good luck.