Ed's comments are so good, I just added a few of my own.
(;ST[2]AP[GOWrite:2.2.21]GM[1]CA[utf-8]FF[4]SZ[19]FG[259:]RU[Japanese]RE[W+6.5]PB[me]RO[1]PC[Online Go]KM[6.5]MULTIGOGM[0]EV[OGS Kuksu 7th Cycle Main Class]HA[0]PW[opponent]GC[Game ID: 331397]DT[2012-02-01,2012-06-12]OT[1 days / move]PM[0]GN[ ]
;B[pd]
;W[dp]
;B[pq]
;W[dd]
;B[cf]
;W[fc]
(
;C[*** Allows the pincer. See variations.]B[bd]
;W[ch]
;B[cc]
;W[ic]
;LB[ef:a]C[Ed: Why do you want to do this exchange, which helps W, when your group is already alive, AND, you can still jump out to (a) ?]B[eb]
;W[fb]
;C[Why? You help W again.]B[cg]
;W[dh]
(
;LB[cg:a][dh:b]C[Ed: Again, why do you want the a-b exchange, which helps W and makes W STRONGER FIRST, then jump here, making a kind of broken shape for yourself ?
*** See variation.]B[dk]
;W[cm]
;B[bj]
;W[bh]
(
;C[*** See variation.]B[bl]
;W[bm]LB[eb:a][fb:b][bl:c][bm:d]C[Ed: Bad habit again, like (a)-(b).
*** You got lucky, preventing the White combination with sente.]
(
;C[Ed: Clearly this is not the biggest point on the board?
*** See variation.]B[cq]
;W[dq]
;B[dr]
;W[er]
;B[cr]
;W[fq]
;B[bo]
;W[co]
;B[bp]
(
;W[kq]C[*** Clueless. See variation.]
;C[*** You could almost call this the game losing play.]B[mq]
;W[ko]C[*** You see how terrible this exchange is? ]
;C[*** Good.]B[el]
;W[cl]C[Ed: Dunno what W is thinking.]
;B[ck]
;W[em]
(
;C[Ed: Soft. Of course you want to hane instead.
*** See variation.]B[fl]
;W[fm]
(
;C[*** See variation.]B[gl]
;W[hm]C[*** Clueless.]
(
;C[*** See variation.]B[fh]
;W[pk]
;B[fe]
;W[fg]
;B[gg]
;W[eg]
;B[gf]
;W[ec]
;B[de]
;W[cd]
;B[be]
;W[bb]
;B[cb]
;W[bc]
;B[ab]
;W[db]
(
;C[*** See variation.]B[ac]
;W[pf]
;B[nd]
;W[qd]
;B[qc]
;W[qe]
;B[rc]
;W[qo]
;B[rq]
;W[oo]
(
;C[*** Why? See variatian.]B[mo]
;W[np]
;B[lr]
;W[mp]LB[mo:a]C[Broken shape. What is (a) doing.]
;B[nq]
;W[kr]
;B[pi]
;W[qh]
(
;C[*** See variation.]B[qj]
;W[qk]
;C[*** Allows White to connect.]B[ni]
;W[rj]
;B[kc]
;W[nk]C[*** Now Black is under attack. End of my comments.]
;B[mk]
;W[nj]
;C[Impossible.]B[mh]
;SQ[nj][nk][mj]W[mj]C[Broken shape.]TR[ni][mk]
;B[ks]
;W[js]
;B[ls]
;W[jr]
;B[ik]
;W[ie]
;B[ig]
;W[lk]
;B[jl]
;W[km]
;B[ke]
;W[nf]
;B[lg]
;W[jb]
;B[kb]
;W[ki]
;B[ii]
;W[rp]
;B[qq]
;W[ka]
;B[la]
;W[ja]
;B[mb]
;W[lq]
;B[mr]
;W[me]
;B[ld]
;W[lf]
;B[kg]
;W[mg]
;B[lh]
;W[sq]
;B[sr]
;W[sp]
;B[rr]
;W[md]
;B[mc]
;W[od]
;B[oc]
;W[oe]
;B[se]
;W[rf]
;B[jc]
;W[hb]
;B[po]
;W[pn]
;B[pp]
;W[op]
;B[kl]
;W[lm]
;B[gm]
;W[gn]
;B[jm]
;W[jn]
;B[dm]
;W[dn]
;B[hn]
;W[go]
;B[ho]
;W[hp]
;B[fn]
;W[dl]
;B[gp]
;W[fo]
;B[im]
;W[io]
;B[in]
;W[ip]
;B[ll]
;W[ml]
;B[qi]
;W[ri]
;B[ph]
;W[pg]
;B[qp]
;W[rn]
;B[ji]
;W[gd]
;B[he]
;W[hd]
;B[if]
;W[oq]
;B[or]
;W[kj]
;B[oj]
;W[oh]
;B[oi]
;W[nh]
;B[mi]
;W[jj]
;B[ca]
;W[da]
;B[ba]
;W[ee]
;B[ef]
;W[ed]
;B[ok]
;W[ol]
;B[sf]
;W[sg]
;B[rd]
;W[re]
;B[sd]
;W[ij]
;B[hj]
;W[ge]
;B[ff]
;W[hf]
;B[je]
;W[kf]
;B[jf]
;W[ds]
;B[ar]
;W[kh]
;B[jh]
;W[ce]
;B[df]
;W[al]
;B[bk]
;W[bn]
;B[ak]
;W[am]
;B[cs]
;W[es]
;B[dc]
;W[ea]
;B[jd]
;W[hg]
;B[hh]
;W[he]
;B[le]
;W[mf]
;B[ao]
;W[jk]
;B[hl]
;W[cp]
;B[bq]
;W[li]
;B[kk]
;W[lj]
;B[jg]
;W[ne]
;B[nc]
;W[pe]
;B[pc]
;W[tt]
;B[tt]
;TB[aa][ad:ae][af:bg][ah:eh][ai:hi][aj][ap:aq][as:bs][bb:bc][br][cj:gj][dg:fg][ek:hk][gh][hm][ih][il][kd][lb:lc][ma:sa][ms:ss][nb:sb][nr][pr:qr][sc]TW[cn][dm][do:eo][eb][en:fn][ep:gp][eq][fa:ia][fr:is][gb][gc:hc][gq:jq][ib][jo][jp:lp][kn:on][lo:no][mk][mm:sm][ng:og][nl][of][pl:sl][qf][qg:rg][qn][rh:sh][rk:sk][ro:so][si:sj][sn]N[RESULT]C[Result: W 6.5]
)
(
;B[qi]
)
)
(
;B[ph]
)
)
(
;B[ba]
)
)
(
;B[eg]
;W[eh]
;B[fh]
;W[fi]
;B[gh]
;W[ej]
;B[gi]
;W[gj]
;B[hj]
;W[gk]
;B[hk]
;W[hl]
;B[gm]
;W[gn]
;B[hn]
(
;W[in]
;B[fn]
;W[ho]
;B[dm]
;W[en]
;B[dn]
;W[eo]
;B[cn]
)
(
;W[go]
;B[im]
)
(
;W[dl]
;B[ek]
;W[in]
;B[fj]
)
)
)
(
;B[ef]
;W[fh]
;B[gf]
;W[hh]
;B[hl]
)
)
(
;B[fj]
;W[fh]
;B[fm]
)
)
(
;W[fk]C[*** Turns the tables.]
)
)
(
;C[*** Now the attack!]B[ef]
)
)
(
;C[*** This is the consistent attack. However:]B[ef]
;W[ck]
;B[cj]
;W[dj]
;B[cl]
;W[dl]
;B[bk]
;W[ek]C[*** This is difficult for Black.]
)
)
(
;B[cm]
(
;W[ck]C[*** White is overconcentrated.]
)
(
;W[co]
;B[cj]
)
)
)
(
;B[ci]
)
(
;B[cn]
;W[fq]
;B[dj]
)
)