1 is copy it copys the part and moves it to the side so you can grab it you can move things with mouse or keys like back foward right left 2 paste pastes the copy part down (btw if you have 2 tabs open for tinkercad you can copy one thing go to the other tab and click past to move it to the other tab ) copy does not make the copy immediately to get copy you mest press paste after it 3 is duplicateand copy its good for patterns 4 is trash just get rid of the selected peice
1 is bunble witch makes a group of multiple selected parts to be one it keeps sharp edges and keep translucent peice translucent 2 is union witch does the same somewhat but any hole block touch a regualr block cuts that part of goo dor shapeing or makeing holes 3 ungroup disassembles the grouped parts 4 is to align parts but be ware its a bit finicky 5 drop the part to the bottom of the work space good for makeing legs and getting them grounded