I think there has never been a better time to learn anything, there is so much amazing technology. You can literally learn a dead language without leaving your bed, how exciting! I'm doing the French course on Duolingo, currently without using any other resources, because I know a lot of basic French already, so I didn't start from scratch. I definitely want to finish the course, and I'll probably build on it afterwards. Maybe I'll find some French books or podcasts. For Hebrew I'm doing Pimsleur, and various Memrise courses to build a bit of vocabulary. I'll probably get some books eventually, but I just started about two months ago, so I wanted to wait a bit and see if I seriously want to learn it. Hebrew resources are not as easily available as for example French, so some of the recommended books are a bit pricey. I want to be sure Hebrew and I are in a committed relationship and not just a fling. Luckily there's a Hebrew Duo course on the horizon as well, so that's something to look forward to. I don't think there's one most effective method. Everyone's brain is different. Some people swear by Rosetta Stone and say it's the only way to learn anything at all, others say it's not for them. For me personally Pimsleur is really effective and enjoyable so far, but I've heard from people who didn't like it at all. I think the key is putting the effort in, no matter what your preferred method is.