1. Look for existing businesses in your local area that already has a website, preferably a small site.
2. Go to http://www.howtogomo.com/en/
3. Run a report on their site. If their site looks terrible on mobile, that's the one you'd want to work on.
4. Email the report to them and tell them you can help them build a mobile version. Set your prices low at first. Say $150 for the first page, and $50 for each additional page. Tell them you will host it for them for free for the first year (tell them you normally charge $120 per year - you must do this. It is repeat revenue every year you see). Keep bumping up the rate until you get only 3 sites to do each week, otherwise your studies will suffer.
5. Use ZURB's Foundation template. It renders mobile pretty well.
You can host your stuff on a small vps. If you are dealing with static sites, I've a VPS at Linode. I'm ok with helping a student out - no charge. Contact me when you need it.
Regards.