Please somebody tell me When should we use the dative cases? like I mean do we change the articles and pronouns everytime or are there certain rules? I have memorized all the definite and Indefinite articles, Dative pronouns, Possessive pronouns etc. But all these that I have learnt is coming off as no use as I do not when to use them and when not to !!!
So this is sort of a complicated thing to answer in one post, but I watch a youtube channel, Learn German with Anya, and I know it sounds cheesy, but she actually has made it a lot more clear for me which is which and when to use each. I´ll post the Dativ video links here and you should check them out to see if it clears it up for you! Short answer, I would say there are certain verbs that demand Dativ, and prepositions/words.. like after mit you use Dativ...etc. Watch the videos and viel gluck!
https://www.youtube.com/watch?v=3unBmbBOqyA&t=279s (series of 4 videos you should watch all)
https://www.youtube.com/watch?v=gurtFfgWSzw (verbs with akkusativ & dativ)
The dative is always used with the Indrect Object. Eg. Der Junge gibt seinem Lehrer einen Apfel, literally, The boy gives to his reacher an apple. I always suggest that vocabulary, word order and grammar should be learned in that order, basically how we learned our native language.
Here is a link that might help... http://www.nthuleen.com/teach/grammar/nomakkdatexpl.html But remember...practice makes perfect....it will come to you eventually... At one point you will just hear in your head what sounds right and won't be asking yourself if it is nominative/dative/accusative. You'll see if you stick around long enough. :)