How can I learn English? I need some advice.

Hello! I want to learn English, but I don't know how. Could you  tell me about your learning?
I'll write a notebook everyday, maybe it will help me to improve my writing skill. Usually people promise themselves to do anything at the beginning of the week. (This sounds better: Usually people promise themselves they'll do anything at the beginning of the week, but I've told myself I'll learn English and so I'll do it.) But I've said myself I'll learn English. I hope I'll do it. Everyday I'll read english grammar rules, increase vocabulary and understand what the difference is between short and long vowels. It is so hard, but I will not give up and (hope, soon) my beginner English level will become an advanced level.

short story

He had a blue car. He loved his blue car. It was dark blue. It had four doors. It was not a new car. It was an old car. But it had new tires. It had new black tires. All four tires were new. He felt safe with his new tires. They would not blow out. He could drive everywhere with his new tires.

His car was dirty. He needed to wash it. The windows were dirty. The doors were dirty. The hood was dirty. The trunk was dirty. The bumpers were dirty. The tires weren't dirty. They were new tires. They were black and shiny. They looked good. He did not have to wash his tires. But he did have to wash his car. He put water into a bucket. He put a sponge into the bucket. He washed his car with the sponge. He dried his car with a towel. His car was shiny blue now. It looked like new. Now his old car was as shiny as his new tires

COMMENT: I don't see any obvious grammar mistakes, so this is good! However, you might want to vary the sentence lengths a little bit. I recommend you keep reading English books and keep on writing, you'll get better over time. 

presentandome

Hi! My name is Alejandro and I'd like learn english.

Have you had this?

This note doesn't carry any sense, so pass by.
I've been learning English for a very long time. About a month ago I had this feeling that all what I was doing was just a waste of time because I thought that I began to understand speech. Colloquial speech. That was my main goal in learning - to understand verbal and written texts. And I do understand speech, but only when it is slow and steady. Recently when I watched one episode of the entertaining TV shows I actually understood that I cannot repeat one sentence. And I have this problem of not being able to express thoughts. I can search for the right word for a very long time in my head even if it's very simple and ordinary. I cannot remember all the idioms, proverbs, modal verbs I had learned before. It seems that with every new word we learn one of the previous just disappears. So, maybe it's just the level  of studying. First, you think that you've achieved something, than realize that that was miserable or just unessential.

Mon prémier texte

Salut tout le monde!

Je m'appelle Jiebing. J'ai vingt-sept ans. J'ai appris le français il y a huit mois. Je travaille dans une société privée dans le Bade-Wurtemberg après de Strasbourg. C'est pouquoi je veux apprendre le français, pour conduire en Elsass et boire du vin et manger du fromage de chèvre.

La prononciation du français est vraiment bon mais c'est difficile aussi. Je veux pratiquer ma prononciation pour visiter France bientôt.

Corrigez mon text, s'il vous plait!

Merci beaucoup. À bientôt!

I know this comment was written several months ago, but I will still respond. I have just begun learning Latin. Perhaps, in a couple months (once I am more fluent) if you are still studying, we can help each other out.