Product review (4 stars): Hints, in no particular order.
I've used this all day long today.  Although this came a few days ago, I just settled down to use it today.  I really put it through it's paces.  Here are a few tips and thoughts.

Your floor will get wet, I really don't see a way to completely avoid this.

Don't overload it! you really can only wash a few pieces well.

Although you can drain the washer with the clothing still in it, I found my clothes got cleaner if I took them out and THEN drained the washer.  Doing it the other way deposited a lot of the lint and dirt back onto the clothing and thereby into the rinse water.

The fill hose is junk.  I thought it would be no big deal to fill using a bucket, but by the end of the day, that was getting old. If I got the washer too full of water, it would slosh over to the spinner.

You can't really run the spinner and the drain pump at the same time.  If you have to choose which to do first, then run the spinner.  The drain pump will work to flush the spinner water out of the hose.

The pump is not strong enough in my opinion.  It would not move most of the water up to a standard drainpipe height, or the lavatory.  However, the hose was long enough to reach my toilet bowl, so that is where it went. I have a gray water system, so I was not thrilled with having all my wash/rinse water going into my sewage.  I'll come up with a different answer, but the toilet bowl worked for today.

When draining the dirty water, keep the water agitated with your hand from time to time.  That  prevents a lot of dirty/linty deposits on the side of the washer.  When the last bit is draining out, pour some clean water in behind it.  That pushes the dirty water away from the washer and your next load of water will stay cleaner.

You really can reuse the water, either as another washload's worth, or discard each wash water, but reuse the rinse water as the next wash water. I used this technique a lot more toward the end of the day, not wanting to fill yet another bucket. I should have done so earlier.

When you are completely done, as a last rinse for both the washer and the spinner, use some vinegar water.  Spin first, then use the drain pump to empty the washer , and that will leave only clean, slightly vinegary water residue in the unit and in the drain hose. Wipe everything down with a clean dry microfiber cloth and give yourself a hearty, "Well done!"

I hope any of this is helpful to a new buyer.  It is a fine machine, and I'm glad to have it. It just has some quirks.