Well, I'll show here the crackmes you send to me and the ones I'll make. The solutions will also appear here.
If you want a lot of tutorials for cracking (all in spanish):
Tutoriales Crack 2000 v 3.5 7.5Mb
If you want curses of a lot of things(nets, C, Pascal, internet,...):
Compilacion de Cursos v 1.0 2.4Mb
And if you don't want to make your own cracks (or you don't have time), you can search them in the best finder of cracks (Astalavista):