My hobbies

I have three hobby, First is rockclibming and hiking
In university, I signed up alpine club in my freshman year,
I have climbed and hiked every week
That is very interesting getting outside and make keeps me in good condition
Second is playing guitar, I have played guitar for 3 months now, 
I dont play good very well but It is fun too to do,
Third is taking a pictures (photography), I bought a camera recently, 
I carried it on my climbing trip and daily life for to take a pictures and memorize those
I forget, fourth It is travel all over the my country, and I want to travel wordwide

I have a question, please teach me about difference of past present and have p.p

Thanks a lot guys and girls

past is somthing that is gone, the present is right now time frams Past present and future 

My hobbies

I have three hobbies. The first is rock climbing and hiking.
In university, I signed up for alpine club in freshman year.
I have climbed and hiked every week.
That It is very interesting and make me in good condition keeps me in good shape.
The second is playing guitar. I have played guitar for 3 months.
I dont play good (very) well, but It is fun. too
The third is taking a pictures. I bought a camera recently.
I carried it on my climbing trip and daily life to for take a pictures and remember memorize those moments.
I forgot that there is also a fourth one. It is traveling all over the my country, and eventually I want to travel around the world. wordwide

I have a question: please teach me the difference between of past, present, and P.P.

I have three hobbies. The first is rock climbing and hiking. 
In university, I joined an alpine club as a freshman. 
I have climbed and hiked every week. 
That It is very (interesting) and make me in good condition keeps me in shape.
The second is playing guitar. I have played guitar for 3 months. 
I don’t play good well but it is fun too. 
The third is taking a picture. I bought a camera recently. 
I carried it on my climbing trip and took pictures of my daily life for take a pictures and memorize those 
I forgot there is also a fourth, it is travel all over the my country, and eventually I want to travel all over the world.

I have a question: please teach me about difference between past, present, and P.P 

Past, Present, Past Participle.

(Since I joined the club,) I have climbed and hiked every week.

There is a ‘specific’ starting time.  You are still doing the activity.

I climb and hike every week.

It is just a fact.  There is no starting time or ending time.

I climbed and hiked every week. (until I graduated)

You are not doing the activity now.  There is a ‘specific’ ending time.