Question about pre-university studies

[strider]

Hello all, PF really is a great resource of physics, I'm glad to be part of the forum now.

I'm 17 years old and now I'm waiting the start of classes at my university (obviously I chose physics ), so now that I have free time for around 3-4 months I want to improve my knowledge to achieve better results in the future.
What should I focus on? I'm thinking about studying high school math because I haven't a good base yet but firstly I would like to see opinions from more experienced students.
What are the best "introduction to physics" books without use of calculus?

Thank you and sorry for my English mistakes, I'm not good with this language.

 

[adjacent]

What are the best "introduction to physics" books without use of calculus?

Why do you want books without calculus?
If you don't know calculus,I think you should self-learn it,like me. Calculus is not so difficult.

 

[strider]

Why do you want books without calculus?
If you don't know calculus,I think you should self-learn it,like me. Calculus is not so difficult.

Because I would like to start reading now but I'm not sure if I can learn calculus in so little time.

 

[Vanadium 50]

If that's the case, you probably can't learn physics w/o calculus in the same time. Colleges consider these courses about the same amount of work.

I like the plan of reviewing what you learned in high school better.