OMG. Run, don't walk from that place!
First, 13 patients should have been about your max amount. If there is no care plan on the patient to outline the care needed, you should not be giving care as it puts you & the patient at risk in so many ways.
You should NOT be transferring patients alone especially if it is not clearly documented on HOW it's to be done (1assist, 2 assist, mechanical lift, etc.).
Clearly this facility is in desperate need of CNA's which is why you were thrown in without training.
Do NOT work another shift without at LEAST 3 days of training. You can bet that if something happens, a patient falls, family complains, you will be responsible. They WILL throw you "under the bus" to protect themselves....guaranteed.