Life In 19x19

Hello,
I'm a Beginner, and I'm studing a lot, and reading some basic Joseki's.

I know the basic to protect my corner against attacks that comes by above side.
But how can I stop this white attack from below to protect and stay with my corner?

Thank you all for patience, and sorry by a simple beginner question.

Hi diogo, if you embed the SGF text directly in your post,
then you don't depend on an external webpage.

Hi diogo,

greedy. Just extend to G3. Then, B4 hane, blocks B5, connects B3, C6 tiger's mouth.

If you take a liberty with 13 at d3 then white has much less space to try to make eyes in the corner, though as it leaves a cut it can get more complicated. But your extend is not so bad, like Ed said the big mistake is g3. If you just extend it becomes the standard 3-3 invasion under a 4-4 stone sequence (do you know this?) which is fine for black as you get a strong wall. You should rarely feel bad about your opponent crawling on the 2nd line whilst you make a wall on the 3rd line, particularly in the opening.

Thanks a lot!!!
I understood how to put the embed sgf and that my move is greedy.

I will serach and study about standard 3-3 invasion under a 4-4 stone sequence.

Thank you very much!!!!