I use an app called Memrise and a website called chinesepod. There's a really good dictionary app called Pieco. Going beyond the standard stuff I'd recommend a

I use an app called Memrise and a website called chinesepod. There's a really good dictionary app called Pieco. Going beyond the standard stuff I'd recommend a professional teacher since you really need to learn Chinese from multiple angles: learning to recognize and write the characters, reading pinyin, understanding spoken Mandarin and being able to speak.