Most trainers have flimsy wire gear that bends if you look at it wrong. This protects the plane during rough landings; But also begin to "splay" easily. Correct this by bending the gear back where it belongs. A slight nose down rake can help make ok landings into good landings.

It's pretty simple really. When the front wheel touches the runway, you don't want the wing to still be flying ie..positive angle of attack.

It will not make up for improper landing approaches, lack of throttle control etc... but it can help you reduce the "Trainer Tango".