My English is not bad. Now a sophomore, I want to learn another foreign language. Which is more studious? Tell me why, it is best to recommend introductory textbooks or websites, thank you.

To be honest, I don't think any foreign language is easy to learn. If you think English is not bad, I suggest you consider Spanish, such as German, French and Spanish. They all belong to the Indo-European language family and have many connections. Of course, this has both good and bad effects. The advantage is that it can help you remember, and the disadvantage is that it is easy to be confused. Among these three languages, I think German is worth learning, because when we learn a language, we need to know its culture. There are many aspects of German culture worth learning. At the same time, I think this nation is really strong, so I admire it. If you want to consider employment, I suggest you choose French or Spanish.

I hope my answer is helpful to you!