This should help:
Make sure when you buy replacement it has everything, including a new wax ring. I even like replacing the bolts because they rust over time.
I would recommend getting a helper as it is heavy. Also, if the link above didn’t mention it have a large trash bag to catch the water when you remove it v
This should help you out
Hello this link should be helpful. Many big box hardware stores sell boxed up toilet to go package kits. We have used them. Check instructions for tools that you might need.
How to Change a Toilet | Ask This Old House
Hi Dwight: You need 2 people. To remove a toilet, first of all, shut off all of the water to the toilet. Flush to remove all of the water and use a towel to get rid of the excess water. Then, the tank comes off by unscrewing it. There are 2 large screws inside of the tank called closet bolts. I think they're called that because toilets used to be called water closets:) Remove that and then there are a couple of little caps on the base of the toilet. Pry those up and remove the bolts that are holding the toilet down. The old wax ring has to be removed completely and the area cleaned thoroughly. Replace this with a new wax ring. Then, the new toilet has to be put on the new wax ring straight down, not on an angle, not sideways, straight down. And, toilets are heavy! That's why you need 2 people. I'd check at the home improvement store to see if the toilet you want is comparable with the opening in your floor. I don't know if they are universal or not. Make sure the toilet is clean inside:) In order to get the water out of the toilet, turn the water inlet off and then flush the toilet. It will fill up, but the tank won't. Then, flush again and use a sponge or rag to get the rest of the water out. Hence, make sure it's clean:) While you're at it, you might consider getting a high rise toilet instead of the regular height. They are only an inch or so higher, but boy, do they make a difference! Especially when you're older
Here are a couple of sites that should help you out a lot.
This one is really helpful!
Good luck, you can do this:)
Here's a good tutorial: https://www.youtube.com/watch?v=dUW_V6oJ2XE Good luck!
Here is a video that can help.
Scroll down and you will find lots of posts on installing toilets: