welcome to logic blocks, its like logic gates and coding blocks cobined! you can use the arrows below the block button to change the group of blocks you want to spawn. Then click on the button to spawn the group of blocks you selected. Click and hold on a block to drag it around and use also use the - and + keys while holding to grow and shrink the size.
this is the first release If this does well I will revisit this and add saving, componate creation, loading, and any other ideas in the comments for blocks or mechanics V1.0 - first release