Back when 0-to-swole progrms filled the web, before people closed off the info and tried selling it for profit, I grabbed a bunch of the free info and synthesized it into an program to build up to 30 minutes of running, 100 pushups, 100 squats, and 200 situps.
This page lets you follow that program. Do a couple of the shown exercises each day, mark them as done, and come back to this page tomorrow to do more.