I thing that when you focus to learn one or two language in the same time is enough for you because in your case you try to learn french and german and these languages are some how difficult i was tried to learn more than three language before (some of them from internet and other in university ) it was very interesting experience but in the same time very hard especially when you have other work (in my case i study electrical engineering and data computing) start with two language ,and do your best to learn them ...after when you have a good level in this two language you can start also to learn another in the same time good luck ^_^

It depends of your age, abilities, time and dedication...and your goal!

Some of my students are learning French and Spanish at the same time. They sometimes comment on the differences in grammar in particular, and sometimes they throw spanish words in because it must get a bit confusing. Some things are a bit close, (like "qui"/"que" in French and the Spanish equivalent) so in result they pronounce the French version with a Spanish twang. I think they possibly also focus less than other students because they spread their time & energy between multiple languages. So those would be the cons. Perhaps someone else could tell us the pros? I only speak 2 languages, which I did not learn at the same time, so I can't speak from experience. Learning a new language takes an awful lot of determination and it's a slow process. But some seems to cope fine and I can only tip my hat.