Basically +1 what Gomla said.
Uppers-Sentinel is good. Montana is also quite cheap for a half deck.
IMHO just keep doing DTs (at least 1 fight in each type) to get 50 clintz x2 every 2 hours. Then just make sure you do 5 elo matches and that your ELO score is > 1000 to get 150 clintz and 2 credits every week.
Once you get pretty decent decks, you can start going for 150+ points on extended DTs for the 1/3 prize (50 clintz and 1 credit) or even 200+ points on standard DTs for the 1/3 prize (50 clintz and 1 credit). Currently, doing the standard DTs are also an easier way to get that 1/150 chance for a Cr.
You can easily buy a decent deck for the money you got, you got Lucky on pulling kallindra, really nice way to start out as she
imediatly give you some amount of cash to work with!
try some of the atk manipulation clans, they are beginner friendly. As you play more you will figure out how to build
your decks better and your ability to predict your opponent will go up.
Try a 4/4 split mabey, you can get the 4 strongest cards from one clan, and the 4 strongest from another.
giving you either stronger characters or 8 strong characters for a cheaper price a lot of the time. Ofcourse as a disadvantage
you won't always have your bonus on all your characters.
some good elo jungos are:
Askai (allthought banned this week), Pegh, Jean, Mindy, Buba (in mono), scopia and some more.