For a neglected hive, full of wild comb and rotten frames, shaking the bees into another box is highly unlikely to be possible for anyone, let alone an absolute beginner.
A Bailey will take time, but that time will allow an interval for a bit of learning.
"Buying time" at this time of the year, by giving the bees lots of extra hive-space, should help prevent swarming...
A new deep box on top with new frames and foundation, a feeder on a top board (with a shallow box around it) and a waterproof roof on the top is the way to go.
Then it is a matter of being patient for a while! Which provides a time interval of a fortnight or so for some serious cramming on beekeeping knowledge, before looking for brood and Queen in the new box. She needs to be confirmed as being up there, before trapping her in the new box with the Queen Excluder. And the new beekeeper needs to be able to make that call.
Hopefully
- the new and old hives are of the same type and therefore size (footprint). If not, you will need to make an adaptor to go between them. A sheet of marine ply, bigger than the bigger box, with a hole cut in it that is almost as big as the inside of the smaller box, should do the trick. Accurate measurements, cutting and prime material are optional, just as long as you can make the join weatherproof.
- there is no Queen Excluder between any of the boxes comprising the old hive. If there is one, it needs to be removed. Not a problem if there is only the one box!
Joe, you have acquired a new hive, but not said anything about other equipment, contacts or training.
My suggestion is that your first task is to make contact with your local association - who may be able to help with 'expert' assistance, the loan of any extra kit needed immediately, and suggestions (quality, discounts, etc) for sourcing other kit that you will need to have of your own. The assistance in person would be particularly valuable when looking for the Queen in the new box. Marking her (and optionally clipping) would be even more helpful.
As a second task, my suggestion would be to get hold of a good beginners book (suggestion - Haynes Manual of Beekeeping) and begin just by going through it, seeing what all the different sections are about, before starting to go through any in detail.
Unfortunately, this is not an ideal time of the year for finding beginners training classes.
Good luck with the new hobby ... !