4-4 point, double low approach, outside diagonal
The problem with this joseki for a weaker player is that Black at a can leave a black wall, but without a pincer attacking and also with some potential shape problems. Clearly this isn't troubling at pro level, but amateurs can come to grief here.
After Black's main options are at e, f and g. Playing g, which is a move useful in handicap games when Black has a stone already at the circled point to attack , isn't very forceful here. Black at e is only seen in old games.
After , black cannot tenuki. White's shape is too good after , . If black wants to tenuki, it should be before , not after.
Probably is the best idea here, but the bulge play gives Black some shape difficulties.
firstian As a beginner, I'm always looking for the "meaning" of a move, so I can think about whether a move makes sense or not, and also how to respond when my opponent doesn't play a book move. I think I understand that either a or c are meant to separate the two stones and develop on one side. What about the meaning of b? For example, in one of my 9-stone handi game, W played:
I think the correct response to is a. But not knowing what is suppose to do, I have no clue how to develop my corner group. (My guess is that helps B runs out to the center, but is that it?)
20k guess: leaves two possibilities - live in the corner, bigger than if hadn't been played (eg with 3-3), or run into the center (eg with b). In a nine handicap game, black probably isn't clever enough to tell which is better. Therefore, treat them as miai and play somewhere else.