there is an app which is a good you can download it called( ECG interpretation made easy )
You need firstly to know the electrical activity of the heart and it's conductive system then the normal waves and their duration and how to calculate the heart rate from the paper and Compare with the abnormalities you need to have a figure of normal ECG and compare
I sugest you book Malcom Thaler , The only ekg book you will evrer n i have studied from that book and i am very satisfiedeed
To malo onda komplikuje stvari. Ako si u mogućnosti za početak nabavi Gajtona i tamo prvo prouči akcioni potencijal i fiziologiju srca. Moj ti je savet da tek kad to prođeš onda kreneš sa EKG-om. Ja sam u tvojim godinama isto tako pokušavao da shvatim ekg ali jednostavno nije išlo jer nisam znao fiziologiju
Hey Katerina.just learn cardiac vectors how they are generated and so on .after learn components of ecg and how waves changes and knowledges about action potential and resting memb polarity will help you to understand more.Better to be familiar to that and go deeper after