if you ask for 'a diode harvest' you are asking for a sled- getting another to pull the diode from it for you is do-able but why??
there are may tutorials about that subject.
Ever been to the library?
You need to look for your own book and read it yourself-
you can get some direction from the librarians... but if you just walked in and announced that you wanted the book handed to you or worse just the needed info read to you -- you would get the same reaction you get here-- those who get spoonfed tend to expect that, which is not realistic.
FAQ-asked and answered--etc .. we just get a bit tired of the same old questions again and again-- use the search feature.. not there? ===try different search terms.
make some friends here and PM them for help.
ps... if you just 'added power' to a diode then you did not read enough before you started. diodes die quick if not all precautions are followed. Much better to learn all this before you go messing about with 50$+ diodes.
Even without screw-ups this 'hobby' is expensive--go slow- learn before you leap-be humble and say thanks when you get help- your neg-rep will, in time, go away.
GL
hak