First off, I cannot speak with authority on this particular repair as I’ve never done an evaporator job on one of these cars.
However, with many Japanese cars the evaporator can often be removed without dash removal. Lower kick panel, glove box, shove a few odds and ends out of the way, disconnect some hoses and a few wires, and they often pull right out.
If you live in a major metro area you might check your local public library. Most of them have manuals or even ALLDATA for free use. They also allow you to run off copies of any pages needed. (About 10 cents a page here.)
A/C work is really not for a novice so you should be aware of things like flushing and evacuating the system, proper use of the gauge set to avoid getting seriously injured, and so on.
An evaporator leak would be a rare thing on a late model so why do you think it needs one?