We often confuse the use of the present simple and the present continuous. One of the reasons for this confusion is that in Spanish we often use both tenses to express the same idea. Watch this video to see the difference.
For example, with the question "What sports are you practising at the moment?" (present continuous) in Spanish I could say "¿Qué deportes estás practicando en estos momentos?", but I could also say "¿Qué deportes practicas/haces en este momento?" (present simple). In English using the present simple for an activity you are doing "at the moment" is wrong. Remember the different uses of these two tenses. Check this table to see the difference.Paying attention to the time expression you are using is also a good way to know what tense to use. Look at the difference.
I usually go to the cinema once a week. (P.S.)
I'm watching films on TV at present. (P.C.)
I usually play tennis twice a week. (P.S.)
I'm playing video games these days. (P.C.)
To practise the difference between these two tenses, go to this link and play the games they offer you. Remember, we can have fun while learning.

