I have shelf brackets high up the wall of the garage with 2x1 on 'em.
I lay the staves across them like shelves, then another couple of bits of 2x1 as spacers and more staves.
When it gets full up I add another two brackets underneath.
I leave the back door of the garage open, and there is a fair gap under the car door at the other end, I get a nice through draft which helps to season 'em quickly.
Del