talk me thru downloading music, total novice!

[Theresa]

'Itunes' is on our computer, i think it appeared automatically with the software i have for turntable for putting records onto computer. I now want to dabble in downloading some music (mainly as my daughter needs it for dancing exams!). Have heard people say prices are pretty simular. Tempted to stick to itunes as its already there, but at moment just has my vinyl stuff on it, but if its not too dificult would like to investigate tesco as i collect clubcard points. Can anyone be bothered to talk me thru the process plse. Thx

[Theresa]

no-one?