Translate this into English: Cvičení fungují a spoustu stránek je prodávají za nemalé peníze. Na této stránce jsou k dispozici zadarmo!
These exercises really work and many sites are selling them for not small amount of money. On this site they are fully free in text form. Competetive sites makes these guides extremly long (for feeling that you have received good service from them), but this site is different.