There is a trip that I [always capitalize the pronoun "I"] plan to go on in the near future

First at of all, I need to buy a ticket. I found that Air-Asia is the most cheap cheapest airway, and there are have many scheduled flights that can non-stop flight go [do you mean "go back and forth" or "do a round trip"] to Malaysia. So Hence this airline is my first choice.

Then i I need to book a hotel. I have used airbnb before, so I think that looking for a b&b is also a good choice too.

I want go to the cities near the sea so that I can learn how to dive diving [or "take diving lessons"]. It’s fresh to me [maybe say "It will be a new experience for me" to seem more natural] . I will start this travel traveling this summer.

There is a trip that i plan to go on in the near future

First at all, I need buy a ticket. I have found that Air-Asia is the most cheap  cheapest airway, and there are many scheduled flight flights that can non-stop flight to fly to Malaysia non-stop. So This airway  airline is my first choice.

Then  Next I will need to need book a hotel. I have used airbnb before. So i think  will look for a b&b. This is a good choice too.

I want go to the cities near the sea so that i can learn how to dive. It’s fresh to me. (?) I will start this travel this summer.

Feel free to set up an appointment with me to talk about these changes as there are numerous ones that need explanation.

Thanks!

Ray LA