Daishou can connect from the chuanzhang partner practice. If your partner comes in strongly, then continue the movement by pulling. As a practice drill, you can take turns doing the drag, or both drag at the same time. You may just do the grab and lightly tug to get the idea, or you may do a full daishou (as you can see from the dirt on my trousers).
Daishou coiling method: partners stand facing each other in mabu or turned mabu. Each circles and grabs partner's arm lightly. You don't need to do the daishou, just get used to coiling around the arm to get the grab.
Moving step daishou partner drill: the parters do the chuanzhang partner drill and add the daishou to it.
Daishou receiving method: Stay well set into your stance to not be pulled over. Keep upright and absorb into your legs, so that if you are pulled you do not snap your back or neck. In general, don't put too much force into resisting, as resistance is futile.
Power release for daishou: You may do a large pulling and turning motion, stepping if you wish. This gives a gentler throw. Or you may do a short sharp daishou, which applies considerable force to the partner and shocks the body. You need to practise shuanyao to be comfortable in applying this force to a partner.