As noriu ismokti lietuviu kalbos.

As noriu ismokti lietuviu kalbos kalba (ismokti ka?: always requires Akkusative (galininkas))

Man reikia ismokti, todel kad nes mes su mano seima vaziuosim i Lietuva (style mistakes)

As labai, labai blogai zinau moku Lietuviu kalba, o mano mama gerai zino moka (would sound better: As beveik nemoku lietuviu kalbos ne taip kaip mano mama: i almost don't speak LT, not like my mother) (moketi kalba, dainuoti, sokti; zinoti kiek dabar valandu, koks tavo vardas, kiek bus du kart du)

 Ir i mokykla man labai sunku (not sure i understand this sentence correctly. If you wanted to say: it is difficult to go to school, then i would be: ir man sunku lankyti mokykla (and it is difficult to attend the school)