* Get a github account and start coding and uploading your code. Bear in mind that you can use this to show your work to future employers, so try to follow some coding standard, like Style-9 (for C/C++) or PEP8 (for Python).
* Apply for an internship position somewhere. You can use the coding project in your resume and put a link to your github account so that others can see what you can do.
I would let the project and your interests drive what coding courses you need to take (if any).
Leo recommends the following next steps:
Checkout different organizations that offer internships with organizations that have a strong support system and mentors to help get you up to speed. Actually getting into the coding and having a team that you can handle questions with is the fastest way to build real-world experience the employers are after. For folks in high-school https://genesysworks.org/ has been a great way for young professionals to begin internships. They may be able to point you to a similar offering in your area.
Identify on why you want to get into computer engineering, once you’ve established that and if computer engineering is something that you’re passionate about, then try out the following.
1. Enroll for a course on Object oriented programming and identify the language you are comfortable with (C++,Java, Python etc)
2. Start practising logics and algorithms
3. Create a small application for yourself
4. Register for coding competitions
4. Apply for internships (free / paid)
5. Continue to keep learning!
Hope this helps :)