Learning a language means learning vocabulary. Physics uses a vocabulary of quantities which need to be memorised in the same way. Once done, learning the theory behind them will be much, much easier.
The idea of energy and the suggestions of how to teach energy in school Physics lessons has changed recently. Rather than thinking of energy as a "thing", teachers are now being encouraged by the exam boards and the Institute of Physics to talk about energy stores and energy transfer pathways. Find out how.