Its 4 minutes of WOW! Ok, its a little technical and talks about compacting gravel a lot, but its an important part of wall building.
This particular block went in pretty easily. I didn't even need to use the sand I mention early on in the video. The sand works great for levelling an ornery block that won't sit straight. Before getting to this step we had set up a base of about 4" of compacted gravel. The shovelful of material I toss in in the video is just to level things off and bring the foundation up to grade for the adjacent block.