hi..i am doing daytrading in last two years,i gain something and lost huge,kindly advice me what should i do.?

i want share trading as my career,so wat should i do,wat are the basics.in which site i get good advice in options.i am confident that i can do it..

I can provide you with on-job training and resources to refine your trading skills to enable competency over a 90 days period – after you complete a pertinent 2 week assignment.
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Question: How is "geometric average" a useful estimation in the context of share prices, explain with a example.