Few hints for NUFC:
Play a short passing and slow tempo style - your players aren't that tall and playing slow/short ensures you keep possession because they will take time with passes and play it along the floor.
Set your GK to short passing style and assign him to pass to a defender with the best technique/ball control (probably Taylor - give him slightly more creative freedom than your other defenders)) - this means he (GK) isn't hoofing long balls which come straight back to you.
Use Sibierski as "Target Man" and make sure you have Owens/Martins as "Run Onto Ball".
NUFC play best as a 442 but I personally play them as a 4-1-3-2 or a 4-1-4-1 against very strong sides.
If you are coming up against a strong attacking force play Narrow and Through the Middle.
Against weaker sides play Wide and Down Both Flanks.
Training is difficult to describe (esp. because I'm at work and can't see my training schedules) but you could try using ones made by other people as a way of learning their effects - fmdownloads have plenty (Matt's Training Package is one I used before I created my own - his is good but a bit too heavy for a season which includes euro games. Look at what he has done and lesson the overall intensity)
A good thing to take into account for training is knowing what NOT to train.
GK's will need strength, tactics, defending, set pieces, and goalkeeping as primary attributes - aerobic/attacking/shooting/ aren't as important,
imo.
Centre backs will need strong defending/tactics/set pieces/strength training but won't need any gk, shooting, attacking training.
Fullbacks will need similar training to centre backs but lessen the defending training in favour of attacking and reduce strength training in favour of aerobics.
and so on.
When you've got your training sorted, make less intensive versions of them (i.e keep same proprtions of training on attributes but make sure they're all in the "Light" bar) and drop the training down to "Light" during very game-heavy periods around xmas or if you have euro games during the week.
If I have a 6 day gap between matches I prefer to fully rest the players involved in the match before and drop the subs/reserves down to Light.