Identifying the proper "levers" and "releases" is pretty important. Owners manual points out all of these, all the parts, and the orientation of them to remove and reinstall. The stock usually holds the loose pins in, so if you don't have a stock, be wary of these. Cover the pins in duct tape, then remove it. The tackiness should help hold these pins in. Don't overdo it as it is possible to get tape goop in your parts, should just be a bit sticky. Most of my pins were to tight and I sanded them gently to get the right slide.
Make a note that the bolt lock, release lever is slightly behind the Mag release knob, and easy to miss. Hold back the bolt and click the rocker lever backwards. It should hodl your bolt. In stock 10/22s, hold the bolt back and rock it (release rocker) forward to release. (If you mod it, you can just nudge the bolt back a tad and the bolt releases and snaps closed.) The mag release is a black larger knoby type thing directly in front of the bolt lock/release lever.