Hi, I am a 3rd year Math student, I am aspiring to become a quant. I should be attending a prestigious mathematical finance masters programme after I finish this bachelors (as long as I don't completely mess up my exams), however I wanted to start dabbling with some quant trading now, preferably with a demo account because I have no money (life of a student haha). I was wondering if anyone knew of any good resources or the best way in general to go about starting this up for myself. I want to get some experience in quant trading but I have no idea where to start. My mathematical background is strong-ish and I can code relatively well (python, R, C++, MATLAB). When I mean I have no idea where to start, I have no idea. I've been researching but I can't find anything coherent. Any help would be greatly appreciated.