Well you shouldn't do it this way but you can do it this way.
It is done when you have a seized engine, so can't get at all the torque converter bolts.
You will leave torque converter attached to the engine and pull off the transmission.
So you will need to remove trans mount and lower trans after unbolting the bell housing.
Then slide it back off the engine/torque converter.
Or if you have enough room, lift and slide engine forward with torque converter attached then lift it out.
Torque converter is not attached to transmission.
be prepared, this will be messy as the torque converter is full of ATF and it will pour out once it is out of the transmission.
Then pull out the engine with torque converter attached.
Since this is your first, just a heads up on reinstalling
Torque converter MUST BE install on the transmission and locked in to the front pump before trying to bolt bell housing to the engine.
If you place torque converter on to input shaft and push it back it will stop.
Not rotate torque converter in either direction while pushing in, don't have to push hard
You will feel it side in farther and often hear a click
keep turning it and pushing there will often be 2 or 3 slide-ins and a click.
If you forget to do this you WILL ruin the transmission, and you won't know you ruined it until everything is back together and you put it in gear and nothing happens.
No Drive no Reverse, no nothing, front(main) pump is broken.