I haven’t seriously studied a foreign language in (gasp!) 19 years, but my daughter’s dive into French has again renewed my interest. I took a year of French in high school (even longer ago than 19 years…) and I didn’t like, didn’t do well in it at all. The next year, I took Spanish. I liked it so much I continued it in college. Still, it’s been 19 years since my last Spanish course. I came across this nice article not too long ago. I like the way the chart is put together. It gives an interesting perspective in terms of time required to learn.