✔ 最佳答案
If you have an avocational interest, then pursue it. E.g. if you're interested in photography, or computer programming, it may be worth it to you. However, you get what you pay for. Freebie courses typically are worth their cost - nothing. And paying $50 for a piece of paper is expensive toilet paper.
It absolutely will NOT look good on your college applications. Spending several hundred on Pimsleur or Rosetta Stone to learn a language not offered at your high school, and completing beginning & intermediate levels would be advantageous. Some diddly-bop freebie is useless - except to YOU if it's a good program. Probably not, or they would charge for it.