Personally, the clear locks are better for getting the initial visualization than actually learning the feel. The one I have seems to be practically self picking. Though I ought to try the one that came in the last HackerBoxes, see if it is any better for actually having some feel.
Actual locks as practice can be found cheap on the clearance isles at HD, Lowes, or Walmart if you keep your eyes open.
There is a lot to be said for starting with good, but not thin picks. Also, spend the time to polish the corners of the shafts. If you don’t, the feel from the pins is lost in the feel of the sharp edges moving on the warding.
Sparrows usually get good reviews:
https://www.sparrowslockpicks.com/
As does Southord:
It is a great way to work on feel and dexterity, but I haven’t ever been able to give it the time it deserves.