twitter

I was setting set up my Twitter acount today.

I will tweet everyday in English.

A fairly simple notbook entry but nearly perfect! Don't forget your periods and "was setting up" is used to describe an action that was in progress in the past that is incomplete. Since I assume you have finshed setting up your twitter account, you should use "set up" since you have completed the action. Great job!

a beautiful bridge

I live in a small town. There are many small islands near my town. I often used a ferry to go there but some beautiful bridges were built connecting the connected between islands and mainland about 15 years ago. Many ferry companies went bankrupt because of these bridges. A lot of people tended to use the bridges.
We can cross bridges by bicycles or on foot. I sometimes cross one of them by a bicycle. I always feel comfortable with a calm wind.

Good Notebook entry! I changed up the third sentence to have it make a bit more sense. You would want to say the bridges were built so people will know that the bridges didnt just appear out of think air. Keep up the good work!

Swimming Pool

Usually, I go to the swimming pool twice a week.

However, the nearest pool from my house is now being repaired so I haven't been to the swimming pool these days.

It's still uncertain when it'll be opened again.

I hope it'll be opened soon.

Very nice! This is a nearly perfect notebook entry. Dont forget to use your articles like "the" and the word "will" like in "it'll" which is "it will" gives the sentence a bit of a future tense which means you want to use just "open" and not the past tense of "open" which is "opened." Keep working at it!