Learning to lift
General strength work (bent over rows, pull ups, dips, military press, deadlifts, inclines it ups, hyper extensions, do 2 a session)
Once their mobility is better we can start to increase teh amount of OLift work.
You can do Jerks/ Rack Jerks with the lifter and at least get that strong if they can't squat properly. It will take time but it can be done. It's taken this guy with literally the worst genetics I've ever seen in 12yrs of competiting/ coaching about 18months to squat properly. He can squat properly but he isn't entirely stable over head in the Sn yet. He's done about 3 comps and he's done about 55 or 60 and 80. He has a really really good work ethic in the gym though.