Hey Kyyberi!
I post a few hands in spoilers in case you'll have time to analyse them. 
#1
pre: I tried to polarize my 3bet range IP (in case of 4bet I'll fold because I'll have been dominated a lot)
flop: checked behind because of the multidrawysh board, think I could get a lot of ch/r-s and I don't even have the As
turn: decided to bet, the Q is unlikely to help him because he checked the turn, think he would have bet w made hand
Spoiler
Poker Stars, $0.02/$0.05 No Limit Omaha Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.
SB: $3.67 (73.4 bb)
BB: $2.94 (58.8 bb)
UTG: $5 (100 bb)
MP: $4.41 (88.2 bb)
Hero (CO): $9.83 (196.6 bb)
BTN: $5.02 (100.4 bb)
Preflop: Hero is CO with J
Q
A
K
UTG raises to $0.17, MP calls $0.17, Hero raises to $0.65, 4 folds, MP calls $0.48
Flop: ($1.54) 9
3
8
(2 players)
MP checks, Hero checks
Turn: ($1.54) Q
(2 players)
MP checks, Hero bets $1, MP raises to $3.76 and is all-in, Hero calls $2.76
River: ($9.06) 3
(2 players, 1 is all-in)
Results:
Spoiler
$9.06 pot ($0.35 rake)
Final Board: 9
3
8
Q
3
MP showed 7
5
8
9
and lost (-$4.41 net)
Hero showed J
Q
A
K
and won $8.71 ($4.30 net)
#2
I'm ahead of the QT, too, so I decided to bet/shove my ass off
Spoiler
Poker Stars, $0.02/$0.05 No Limit Omaha Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.
SB: $7.80 (156 bb)
BB: $5.42 (108.4 bb)
Hero (UTG): $5.09 (101.8 bb)
MP: $4.17 (83.4 bb)
CO: $9.08 (181.6 bb)
BTN: $14.05 (281 bb)
Preflop: Hero is UTG with 6
9
A
A
Hero raises to $0.17, 2 folds, BTN calls $0.17, 2 folds
Flop: ($0.41) J
A
K
(2 players)
Hero bets $0.30, BTN raises to $1.29, Hero raises to $4.26, BTN raises to $13.17, Hero calls $0.66 and is all-in
Turn: ($10.25) 9
(2 players, 1 is all-in)
River: ($10.25) 3
(2 players, 1 is all-in)
Results:
Spoiler
$10.25 pot ($0.40 rake)
Final Board: J
A
K
9
3
Hero showed 6
9
A
A
and won $9.85 ($4.76 net)
BTN showed 9
T
T
Q
and lost (-$5.09 net)
#3
I'm totally unsure also pre and post what to do
Spoiler
Poker Stars, $0.02/$0.05 No Limit Omaha Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.
Hero (SB): $7.38 (147.6 bb)
BB: $5.74 (114.8 bb)
UTG: $2.65 (53 bb)
MP: $5 (100 bb)
CO: $4.01 (80.2 bb)
BTN: $5.63 (112.6 bb)
Preflop: Hero is SB with Q
4
J
A
UTG folds, MP raises to $0.10, 2 folds, Hero calls $0.08, BB raises to $0.40, MP calls $0.30, Hero calls $0.30
Flop: ($1.20) J
A
K
(3 players)
Hero checks, BB bets $0.55, MP calls $0.55, Hero raises to $3.35, BB raises to $5.34 and is all-in, MP folds, Hero calls $1.99
Turn: ($12.43) 2
(2 players, 1 is all-in)
River: ($12.43) 9
(2 players, 1 is all-in)
Results:
Spoiler
$12.43 pot ($0.48 rake)
Final Board: J
A
K
2
9
Hero showed Q
4
J
A
and lost (-$5.74 net)
BB showed J
A
Q
T
and won $11.95 ($6.21 net)
MP mucked and lost (-$0.95 net)
#4
At the turn is it better to check behind and try to bluffcatch the river if I improve?
Spoiler
Poker Stars, $0.02/$0.05 No Limit Omaha Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.
SB: $8.11 (162.2 bb)
BB: $9.80 (196 bb)
UTG: $9.22 (184.4 bb)
MP: $5 (100 bb)
CO: $5 (100 bb)
Hero (BTN): $7.36 (147.2 bb)
Preflop: Hero is BTN with J
T
K
9
UTG folds, MP raises to $0.15, CO folds, Hero raises to $0.45, 2 folds, MP calls $0.30
Flop: ($0.97) J
5
6
(2 players)
MP checks, Hero bets $0.70, MP calls $0.70
Turn: ($2.37) 4
(2 players)
MP checks, Hero bets $2.28, MP folds
Results:
Spoiler
$2.37 pot ($0.09 rake)
Final Board: J
5
6
4
MP mucked and lost (-$1.15 net)
Hero mucked J
T
K
9
and won $2.28 ($1.13 net)
#5
an interesting hand
Flop: call because there is a plenty of sets and top 2 pairs againest which I don't have fold equity + if he has some kind of multidraw we are ahead
Turn: raise - because of the miniature bet sizing I though he is capable of folding his hand even if I gave him a strong range, this bet was so strange (not sure if it's good thinking process)
River: is it better to just call him down and see what he has?
Spoiler
Poker Stars, $0.02/$0.05 No Limit Omaha Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.
SB: $5.37 (107.4 bb)
BB: $5.86 (117.2 bb)
Hero (UTG): $5.02 (100.4 bb)
MP: $5 (100 bb)
CO: $6.14 (122.8 bb)
BTN: $20.45 (409 bb)
Preflop: Hero is UTG with A
7
A
3
Hero raises to $0.17, 3 folds, SB calls $0.15, BB folds
Flop: ($0.39) Q
5
K
(2 players)
SB bets $0.37, Hero calls $0.37
Turn: ($1.13) 7
(2 players)
SB bets $0.20, Hero raises to $1.60, SB calls $1.40
River: ($4.33) 8
(2 players)
SB bets $0.25, Hero raises to $2.88 and is all-in, SB calls $2.63
Results:
Spoiler
$10.09 pot ($0.39 rake)
Final Board: Q
5
K
7
8
SB showed J
Q
K
5
and won $9.70 ($4.68 net)
Hero showed A
7
A
3
and lost (-$5.02 net)