Is it possible to improve your English level without classes?

Well, currently I'm trying to improve my English level by myself, and sometimes I have a lot of questions about if whether it is possible go up to improve our my English level without taking any classes. I haven't studied English since I left the Institute. And all the time after that, in the my college career, I haven't praticed anything in English.
One week ago, I have decided to learn English, but I can't go to an academy in at this moment (or "at this time"). For this reason, I have been searching online resources to do it.
For instance:

I'm watching series (like Game Of Thrones, Manhattan) in VO with English subtitles. Every morning I'm reading I read online the Daily Telegraph (just the interesting articles for me) (just the articles interesting to me); and every night, I'm hearing I listen to BBC News or some similar program (like all the progams to learn English in Vaughan Channel) at on the radio. And the last thing that I have done has been to is join in Italki.

I would like to improve my English level more or less in one year because ("cause" is less formal, and when we use it, we don't write it with the comma).  I want to prepare the FCE exam, because unfortunately in Spain the most important thing is to have the title.

Sorry about the mistakes!!!

Is possible to improve our English level without classes?

Well, currently I'm trying to improve my English level by myself and sometimes I have a lot of questions about if it is possible go up to improve our English level without take taking any class. I haven't studied English since I left the Institute and all the time after that, in the college career during college, I haven't practiced anything in English.
Once One week ago, I have decided to learn English but I can't go to an academy in at this moment. For this reason I have been searching for online resources to do it.
For instance:

I'm watching series (like Game Of Thrones, Manhattan) in VO with English subtitles. Every morning I'm reading online the Daily Telegraph [<em>or</em> I read the Daily Telegraph online] (just the interesting articles for me) and everynight I'm hearing I listen to BBC News or some similar program (like all the programs to learn English in the Vaughan Channel) at on the radio. And the last thing that I have done has been to join in Italki.

I would like to improve my English level more or less in one year 'cause I want to prepare for the FCE exam because unfortunately in Spain the most important thing is to have the title.

Sorry about the mistakes!!!

Good stuff Oscar! My corrections are in red and my suggestions to sound more natural are in blue/grey.