What is the best way to learn a language?

Mr. lockwood, your new tenant, sir. i do myself the honour of calling as soon as possible after my arrival, to express the hope that i have not inconvenienced you by my perseverance in soliciting the occupation of thrushcross grange: i heard yesterday you had had some thoughts - ' what does the term tenant mean in this passage? a) colleague b) friend c) neighbor d) renter