How i clean,
afterwards, i throw my paint out, put some water in, clean the cup with my finger, still being filled with water, dump water. Then cleaner, flush it through, get the needle out and wipe it with a cleaner dripped rag, from the end to tip.
for colour changes, i just clean the cup, and run some cleaner through, and if dirty i clean the needle.
So yeah, try the basics, but also give littly projects a shot.