Tips for Spanish Learners!
-Pay attention to the word before the noun. -Check if the word is plural or not -Practice! -Some words, like paraguas have the same spelling as the plural version, so be careful. leave some tips in the comments! ;)
Mmm, memorize the false-gender words. The rule to identify masculine and female words using the last letter is effective the most of the cases but some words dont follow that rule.
Televisión is female. Then when you want to use the article it must be "La televisión"
Mar is male and sometimes a lot of people treat it as a female word, so you could to write "El mar" (this one is more correct) or "La mar" (A little bit informal).
Canal is a masculine word, then: El canal de televisión / The television channel.