You can learn about different on-campus accommodation options offered by the universities. Many universities offer residence halls for students. You can check their availability and secure your slot ahead of your travel. Many universities offer accommodation for the first year only. You can opt for off-campus accommodation like shared apartments, homestay, and luxury apartments. The residence halls cost $800-900 per month; residence halls - self-catered cost $600-$800; shared apartment in sharing by four people costs $400-$600; homestay may cost $300-$500; and luxury accommodation costs $2000. These rates may differ across cities.

Yes you can do an internship during your program over the summer break. You should be a student for a minimum of 9 months to qualify to do an internship

You can find an on-campus job from the first semester itself.  

CPT stands for Curricular Practical Training (CPT) and OPT for Optional Practical Training. The CPT is designed for students who are currently studying at universities. This allows the students to seek employment training, do paid internships, co-ops, and practicums. Students can work part-time for 20 hours per week during the semester and 40 hours per week during the semester breaks. CPT is usually employer-specific and if you work for 12 months, you cannot apply for OPT. OPT is related to your major area of study. Students can apply for OPT before or after completing their studies. It is generally awarded for 12 months. But students who have graduated in STEM subjects can seek an extension of 17 months, or work for 24 months. Students with F-1 visa status can apply for CPT and OPT. A student needs consent from the academic department and ISS to pursue CPT. However, the consent of the USA government is required to pursue OPT. The student doesn’t receive employment authorization document (EAD) from USCIS for CPT but for OPT, the EAD is provided.

The CPT application requires no application fee, whereas OPT requires an application fee.

There are 4500 accredited universities in the USA. Choosing the best university for your undergraduate and postgraduate study will depend entirely on your interests and budget.

Most universities may not accept 10+2+3 education, but some do. The best option would be to check the eligibility criteria of the shortlisted university.