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Sorry to hear that.

Build manual for ToyRep, including wiring on Arduino Mega with RAMPS 1.4 and DRV8825 stepper drivers is here: http://reprap.org/wiki/ToyREP_Build_Manual

If you use A4899 stepper drivers remember they have to be installed other way around. See this page where is the correct orientation of both of them: http://reprap.org/wiki/A4988_vs_DRV8825_Chinese_Stepper_Driver_Boards
(green are A4899, purple DRV8825)

Correct microstepping set by jumpers under stepperdrivers is on this picture: http://doku.radds.org/wp-content/uploads/2015/02/MicroStepping_Modes_tbl.png
For Z motors 1/4 is just fine. For X and Y axis and extruder anything above 1/8 will give you enough resolution. If you put there all jumpers you will get 1/16 microstepping on A4899 and 1/32 on DRV8825. No problem with this setup, only you will lose a bit of torque in Z axis and the amount of microsteps for 1mm will be ridiculously high.

Complete wiring diagram of RAMPS 1.4 is here: http://reprap.org/wiki/RAMPS_1.4
The position of endstops and thermistors is much clearer there. Mind the polarity of 12V PSU too!!!

Don't forget to do the bipolar hack on 28BYJ-48 motors: http://www.electronicsmayhem.com/?p=13

Set the current on stepper drivers to minimum as described on this page: http://reprap.org/wiki/Pololu_stepper_driver_board
0.09-0.15A should be enough!

If any other query, just ask.