A few comments to get started with:
b5: A fine move, but you should make your subsequent moves work with it.
b7: How about a pincer to use tengen and try to provoke a fight, in the joseki to w10 you allow white to easily settle which makes tengen harder to use. If you took it off the board would you now play it?
w12: Probably low at o3 is simpler and better, here black can play m3 which makes a fight and tengen can be useful again.
w14: But here high is better! As you already gave c9 strong and low.
w18: Take the 3-3 to get more base and territory as black ought to block the top side to keep that potential.
w22: What is the purpose of this move? If you want to attack black's right group then first kick at r5 to both help your corner and reduce his eyespace. But the shape with r11 is not good.
b23: An interesting move, I don't know if it's good or bad! It allows white to connect at q10, but in a weak shape, and as a plus builds your top centre, and if white does connect then you can settle with s4 slide. Instead can split yourself at q10, or s4. s4 is very big because it both stengthens black and weakens white.
b25: Nice for the moyo, but white r5 will hurt.
w26: r5, l17 would be more normal place to invade here.
w28: complicated as black can cut. Are you happy to sacrifice m17 to munch f17?
b29: This attacks the group as a whole, but if you can't kill do you get enough? Can also think about k17. If white pulls back to h17 then k16 solid connect and if white g16 or f16 next you can either keep fighting, or just jump into c17 to keep most of your moyo and take the corner. White's crosscut though would be tricky...
w30: k17 would be simpler, this one requires a lot of reading
b31: ok, but what next...
b33: this is the first big kyu mistake. You help white get strong and kill your own k17 stone. One thing to consider is k18, but then h16 j15 h18 g17 and l17 captures. That's not a total disaster as you can get some nice forcing moves, but white lives in your moyo. You could ignore h18 atari to l16 ladder, but white is ok with g17 capture too. In fact you could play l16 atari and then l17 connect. to sacrifice some bits to the left to kill m17.
b35: I prefer one of the solid connections, but well done for connecting aiming at k18, rather than just playing h18 simple sente.
w36: h18 first to ask black if he wants to block (which means you need to defend at k18).
w38: big no no. Hurt yourself.
b41: nice! Better than f18 as can sneak into corner better later, and g19 atari doesn't help white much.
b45: Good, white lost a lot compared to just defending at k18 now, black got thick and damaged white's corner.
w46: Big, but r5 urgent.
b47: good!
w48: exciting
w50: giving black 3-3 in sente is generous, but it does keep his shape weak. I thought you might r8.
b51: Not good. s9 if it works is huge. Or r8 compromise. Fix that group first before embarking on new adventures.
b53: flailing indeed
w54: White has a chance for severe attack here: r4 s2 s2 s3 s5 r5 s6 cuts. Black can play r5 at s6 to keep connection but then the shape is very weak.
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1039050-255-joellercoaster-Aidoneus.sgf [8.27 KiB]
I have much to learn!