I'm on level 8 of the language I'm learning and it's quite motivating. I set myself targets to get to the next level by a certain date. I used to do babbel and I find this (free!) format is good.
Anybody else using duolingo and is it good do you think? My other language is Spanish and funnily enough I can't get past level 8 when I test myself as I make 'mistakes' like I say pilas and coche and techo instead of the south american word they are looking for. So, no short cuts!