I've been making some progress on this, so it's time for an update. (The photo quality is better if you click on them.)
As noted in the previous post, I wanted some pieces running from the front to rear aprons. These would incorporate the drawer runners and, in due course, the mechanism ("deckchair notches") for holding the lifting section of the top as well as buttons for the fixed side parts of the table top.
I decided to do these pieces with stopped housing dados which worked well.
After a bit of thinking about how the drawer runners and deckchair notches would work, I decided that there was nothing sopping me from gluing everything up, so I took a couple of brave pills and went at it. It was a bit hairy at times but overall it went pretty well. I think one of the legs is slightly out of line with one of the other legs in one direction but I can live with that.
I decided to do the drawer next.
I made and fitted the runners first. They're made out a single piece. I cut a wide dado with a dado blade on my table saw and then ripped that down the middle to leave each drawer runner. I then planed the side and bottom to fit each one before screwing them on.
On to the drawer itself. Half blind dovetails at the front and through dovetails at the back with a plywood bottom running in grooves in the side and front. I had wondered about doing a solid wood bottom and drawer slips, but I decided to play it safe. I was also going to go for slightly fancier dovetails (e.g. narrow pins) and even started trying to cut the tails. I got as far as realising that my smallest chisel was too big and abandoned that pretty quickly. As a complete novice, I also struggle a bit being accurate enough in oak so decided to go with something I've done before.
After cleaning up the dovetails and making the sides and front/back flush I fitted the drawer. The drawer front needed a bit of work to get it flush with the apron (having fitted some stops at the back of the drawer runners) but I was pretty chuffed with the outcome.
After that, I tidied up the tops of the legs and aprons to get them flush.
Next I need to turn my attention to making the top. The first step there is to take a long look at the boards I have left to work out if I have enough(!) and, assuming I do, how best to orientate them.