Product review (5 stars): Great machine; Getting the most out of your twintub
Many reviews; the favorable ones are right, the unfavorable may have misunderstood what they were buying.  Manual washer supplies the power, the operator supplies the attention.  Tucks away when not in use, almost anyone can pick it up, machine is small (tape-measure the dimensions to get an idea).  The spinner is not a "dryer" as some seem to have expected, it spins water out like any washer only more effectively than most.

I bought the XPB45, half again greater capacity, identical design and operational characteristics.  I hope Amazon makes this model available in the near future, I much prefer buying from Amazon than other online retail platforms.  Since the only difference between the -36 and -45 is a couple t-shirts, the use 'tips and tricks' are the same for both.  Few are familiar with twintub operation.  The included instructions are skeletal.  I learned from Grandma on her Easy in 1953.

First, tape the drain hose to the sink with packing tape.  Or clamp it under the toilet seat.  Guess why I said that first, LOL.  The pressure will make it want to escape.  It won't hurt anything but can make a mess, might as well avoid that.

Next, UNDERload the washer so everything moves freely.  Much better results with 2 small loads than one excessive one.  (Actually true of any washer, particularly evident with a small one.)  Use HE/low suds detergent.  Use body-temp water (100F) unless fabric says 'cold'.  The temp limit for these machines is 120F.

Some reviews mention lint.  The washing action is very vigorous.  Let the detergent do the work.  Use short (1-min) agitations with long soaks between.  UNDERloading will also minimize lint, as the fabric is free to move.

Contrary to the instructions, it is not necessary to drain the wash tub before spinning.  For light soil you can reuse suds and still spin each load as you go.  The 'spin' switch starts the pump independent of the 'drain' switch.  If the wash water becomes dirty/brown/scummy, drain and refresh.  This is where the operator supplies the attention for best results with varying soil.  'Automatic' washers can't replace human judgement and guidance.  Twintubs can produce superior results with supervision.

OK, I'm starting to sound like holy grail.  Sorry.  I'm a scientist and laundry is science.  On to spin rinsing.  When a load is done washing, distribute it in the spinner, turn the spin timer on with the door open (starts the pump) and run faucet water into the spinner for a minute.  Then close the spin door and let it spin until water stops coming out.  For some users the job is done.  I prefer an agitation rinse, back in the wash tub briefly with fresh water then back in the spinner.

All these options are yours to use as needed.  The Panda performs them at your direction.  With decades of laundry experience, I am completely satisfied with Panda.

Appendix:
'New washer smell' is butadiene, same thing a tire store smells like.  Dissipates rapidly with use, just like it does with new tires.

'Puddles'.  I find the rapid reversal of spinning water can splash water out the right front edge of the wash door.  More so with large single-piece loads like sheets.  A kitchen sponge can be placed below that point to catch drips.  Strategically-placed household weatherstrip tape may prevent them.

'Prewash'.  Like with any washer, some soils/stains may require extra treatment.  Pretreat with stain release sprays.  If first wash water is especially dirty, spin items (for dripless handling) then rewash.  You will probably find that heavy-soil items benefit from a prewash.  They can be set aside and all be rewashed in the same fill, as the bulk soil has already been removed.  Prewash/normal should be 100-105F so stains don't set.  Second wash should be 120F, do not exceed.

'Detergent dosing'.  Detergents have no instructions for the small volume of a twintub.  Dosing will be tablespoons instead of cups/fractions.  2 tbsp should be right for normal use.  For heavier soil use up to 4 tbsp.  Powders are preferable to liquids (Consumer Report verifies.)  I recommend 1 tbsp STPP detergent booster (available from Amazon, ~$3/pound) for every fill.