in law vent and job help

well its not a vent so much as what happened today. well so has been acting like a douchenozzel for a couple weeks now. well he broke down and asked his mom and aunt what he should do. A. either quit suddenlink making 615 every two weeks b4 taxes plus 600 gas allowance ( a month) and commission (averaging about 1k for 3 months extra) and get his cna which is min wage 40 hours for 6 weeks which is like 800 for a whole month but then he gets paid 9 an hour and 10 on weekends sure thing if he does well in the class. or B. keep the suddenlink job which he hates and is high stress and they could decide to lay them off when ever sales arnt good. he is door to door.
we have xmas and dd 12 month birthday coming up and it will be slim pickings during the class. he has done non cna work and he really feels like being a cna is what he is supposed to do with his life. he absolutely loves the work only left old job bc it was min wage with no chance of insurance or advancement.

his mom lets us use her extra car which we want to purchase but she always had exuses and we have no other option for a car. well all she could do was smurf talk about how all we do is blow money and we are destroying her car. it had 100k+ miles on it and it leaks a touch of oil and my dad put in over 300 bucks worth of parts on it and he didnt charge for labor. so doesnt keep it the cleanest but we are good with it. so's sister got a 3500 dollar car for her 18th birthday and its alot nicer and whenever it needs anything mil pays for it. he blew up today at her and just all the bs that goes on and she offered 1k for it so she can be done with it and us. he seems to be in a better mood about venting finally but i feel bad that his mom is such a bitch and we try to help her out as much as we can bc her house burnt down. thanks for reading i hope i make sense =( i had to take a perk bc the stress has my gallbladder smurfed up again