My one big hint is to know your printer and how to open up the pass through for printing card stock or whatever. Most printers have a way to do that, often the door is on the back of the machine so you might not have noticed it. You also need to know/run some tests on what side of the paper is up
I just take a piece of paper, write "test this side up" on it and run it through the sheet feeder. If the printing is on on the "test" side, then I know it's right side up!
There are lots of places on line to find out about home printing on fabric. Here's a Wikihow on the freezer paper technique:
https://www.wikihow.com/Print-on-Fab...-Freezer-Paper
Their are more sites that discuss whether individual inks are waterproof and such. It varies greatly. Best always to do tests first.
I'll be talking to my friend in Arizona this week, she's done quite a bit with photo transferring and such and has taught classes in it. I mostly have just made labels.