Immersion and Usage. Any opportunity to be surrounded by the language, and especially when you are forced to use it, will greatly increase your fluency. Not be

Immersion and Usage. Any opportunity to be surrounded by the language, and especially when you are forced to use it, will greatly increase your fluency. Not being too concerned about making mistakes and just speaking as much as you can is also important. Immersion and free usage after a base of grammar/vocab study is what works for me.