[RadioKid]

Your question is too vague for foreign people to answer. What is the goal of "learning Kanji" ?

Chinese people have 50,000 kanjis (I neither mean "use" nor "know" by "have").

Usual Japanese people would read and understand 3,000 to 5,000 kanjis. Average native Japanese would be able to write 2,000 kanjis.
Japanese High School boys/girls would use 1,500 kanjis.
Japanese children would learn 800 kanjis by age of 12.

Once I asked foreign people in these kind of forum site how many kanjis they learned. I had got various answers and understand below.

1) It is tough to learn first 200 kanjis.
2) After learned 200 kanjis, learning speed will be accelerated.
3) With 800 kanjis learned, you will understand 80% of kanjis used in Japanese daily life.

Therefore, I recommend you to ask "how long does it take to learn first 800 kanjis?".