Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to study computer science [title] Check out free online courses. [step] If you cannot or don't want to attend an undergraduate program in computer science, you'll be pleasantly surprised at the availability of free coursework online. [substeps] For example, you can sign up for computer science related courses on coursera.

Ending1: Alternatively, you may plan a study group to help you develop a skill set. Look up tutorials and pass them on to a class instructor or mentor. Ending2: You should also check out opencourseware from the massachusetts institute of technology. It is a goldmine of information for people who want to have access to computer science materials at an academic level without paying tuition. Ending3: While this is not always necessary, it helps you prepare for a career in computer science when you participate in any peer peer organizations. Colleges also offer courses on the humanities at several university major and online courses on mechanics, foreign affairs, history, and organic planning. Ending4: If you have a passion for researching, look into programs like runescape, culver, and the simlabs. Any courses you take online will help you learn about your chosen field.

Answer format: ending1/ending2/ending3/ending4