You could either press flower, some even just do that naked and collect the oil around the edges for a few dabs, or 76u bag larger amounts and press larger batches depending on plate size and pressure available, or for larger amounts on strains with high wash numbers you could freeze the dried material and wash it for whats basically bubble hash, then freeze dry that and press it through 25u screen. One can also get weed really dry, deep freeze it and then make dry ice hash and press that through the 25u screen. Thats a good method for small scale IMO since you can avoid the freeze drier.
Somewhere I have a video I made of a drip tech press that was pretty cool a few years back but best yields are from allowing the rosin to escape from more edge length so presses like the Pikes Peak or Longs Peak are pretty much the Cadillac press right now, you can operate them on their side as drip tech or upright for flow out both sides. gopurepressure.com is their site, they have linked
youtube channel <- link there, with some bad ass rosin flowage. One where they press a slab of fresh frozen washed hash and get the massive golden goo of live rosin... They make it look so easy prepping that log and wrapping it in the screen, I look like a monkey fucking a football tryna do that lol. It's not easy to do well.
I have their Pikes Peak press and it's fucking bad ass. Takes up a lot of space though especially with a compressor since you need a big one. Not something for an apartment lol.