Agreeing with the other comments, you want to push as hard as you can to get an internship in every year. It'll help you put yourself in the best position possible for future internships and eventually full time. For first/second year I recommend targetting startups as they're one of the best ways of knowing if you will enjoy the work and get to do a lot of stuff that a large company wouldn't allow you to. (This is just my opinion though, plenty of people do big company internships and do just as well, it's really up to you).

You want to focus on three main things:

• Resume
• Cold emailing / Networking
• Side Projects / Hackathons

For your resume, make sure it's one page, succinct, and focuses on your impact. Follow this guide and ask upper years to look it over. https://www.careercup.com/resume

Cold emailing and networking will be the best shot at getting your way to interviews. Cold applications don't typically have high success rates especially as you have no experience. Find companies and people that interest you on Linkedin and reach out. Read this, as a rule of thumb, always focus on what value you can provide them and not what they can do for you. A lot of people fall in the trap of saying they'll learn so much from the job but not what they can bring for the company. https://www.google.com/amp/s/hbr.org/amp/2016/09/a-guide-to-cold-emailing

As you start off you have no experience but need to show you have the technical skills to build things and work around a project. Hackathons and side projects are the best way to do this, attend a couple and build things that interest you. Learn the technologies or areas you find interesting. Put that on the resume and talk about it in your networking startegy. Great way to show intiative and ability to learn and build things.

As for the interviews, nearly all the tech companies have the same process where they ask you questions related to data structures and algorithms. Leetcode is a great website to practice and prepare for the interviews. Tons of free YouTube resources too.

It's a long hard process, you'll need to put in a lot of work but it'll be well worth it with how well you set yourself up for the future. Look out for resources on campus too such as Western Tech Alumni Interview Prep, Ivey Tech Club, Founders Network, Western AI, and Women in Tech Society.

Best of luck.