Day 1. Dear diary.

I´m not a determined person, I always start things that I don´t finish and I don´t like this. Now I must be serious because I really need to learn English so I´ve just decided to write about my daily routines everyday. I´m going to begin right now.
Today, I woke up so really early and took out my dog out for a walk, she is my little princess and she calls her name is Mocca. We went to a beautiful park where she can run around a lot; she loves this place because she always can always run chase after birds and playing with other dogs. Afterwards We came back home and then I had my breakfast, I ate some fruit and nuts, always I always take eat this these except when I have breakfast outside, in that case I would have a slice of toast with tomatoes, and olive oil, and orange juice...yummi yummy!!!!
Now, I´m not working at the moment, so I have a lot of time to clean my house, studying English and cooking some dishes . I especially like making desserts... I love to bake it!!! In the evening, I had my English class. Today we learned the prhasal phrasal verbs and it is so difficult for me!
*** I have a question... in the lats last sentence, what is the verbal forme correct tense to use... past simple or present perfect?
Thanks you so much and good night to everyone!

ps: in the last sentence "Today we learned phrasal verbs and it is so difficult!", there is both simple past tense and present tense. The simple past tense is used in "Today we learned phrasal verbs" and present tense is used in "it is so difficult!" The present perfect tense (for example: "I have learned phrasal verbs") indicates either that the action was completed at some point in the past or that the action extends to the present.

pps: good job, Rocio! Keep it up :)

Day 1. Dear diary.

I´m not a determined person, I always start things that I don´t finish and I don´t like this. Now I must be serious because I really need to learn English so I´ve just decided write my routines everyday. I´m going to begin right now.
Today, I woke up so early and took out my dog, she is my little princess and she calls Mocca, we went to a beautiful park where she can run a lot; she loves this place because she always can run after birds and playing with other dogs. Afterwards We came back home and then I had my breakfast, I ate some fruit and nuts, always I take this except when I have breakfast out, in that case I have a toast with tomato and olive oil and orange juice...yummi!!!!
Now, I´m not working, so I have a lot of time to clean my house, studying English and cooking some dishes especially dessert... I love bake it!!! In the evening, I had my English class, today we learned the prhasal verbs and it is so difficult for me!
*** I have a question... in the lats sentence what is the verbal forme correct... past simple or present perfect?
Thanks you so much and good night to everyone!

'decided write' :  decided to write

'I woke up so early' :  I woke up very early

'she calls Mocca' :  she is called Mocca

'she always can run after birds and playing with . . ' :  she can always run after birds and play with . .

'always I take this' :  I always have this

'studying English and cooking' :  (to) study English and cook

'I love bake it' :  I love baking

'prhasal' :  phrasal

'in the lats sentence what is the verbal forme correct' :  in the last sentence, what is the correct form of the verb . . ?   'In the evening I have* my English class;  today we learned the phrasal verbs . .

*this is a regular event, so present tense, but if you had been referring to something specific to this evening in the same phrase you would use the (simple) past :  'This evening I had my English class and we learned the phrasal verbs'.

Day 1. Dear diary.

I´m not a determined person, I always start things that I don´t finish and I don´t like this. Now I must be serious because I really need to learn English so I´ve just decided to write my routines everyday. I´m going to begin right now.
Today, I woke up early and took out my dog, she is my little princess and I call her Mocca. We went to a beautiful park where she can run a lot. She loves this place because she always can run after birds and play with other dogs. Afterwards, we came back home and then I had my breakfast. I ate some fruit and nuts. I always eat this except when I have breakfast out, in that case I have toast with tomato and olive oil and orange juice...yummy!!!!
Now, I´m not working, so I have a lot of time to clean my house, study English and cook some dishes especially dessert... I love baking!!! In the evening, I had my English class, today we learned the phrasal verbs and it is so difficult for me!
*** I have a question... in the last sentence what is the correct verb tense, past simple or present perfect?
Thank you so much and good night to everyone!

Your last sentence is grammatically correct. You want to use the past tense when speaking about something you did in the past.