Chicago Bricks I got for free from craigslist. Not ideal for a patio since they absorb moisture; but for the price I won't complain if they break up after awhile
First step was dig down about 2 ft. Then added 1.5 ft of class 5. Leveled it and packed it down and let it sit for 2 weeks. Then 6 inches of sand. leveled it and let it sit.
Started by splitting a brick into an even square for the center.Then just started building off it.
Completed with all my plants and stuff. Total cost was less than $60 for the class 5, and sand. Not perfect but im happy with it.