[mothered]

would you recommend best and fast way to run for each goal?

The fastest method to learn, Isn't necessarily the best method. You need to take the time to understand "how & why" a given task operates and functions the way It does.

When you fully comprehend the objective at hand, only then can you move forward to the next challenge.

can i just get checkers for cracking?

Hitting the start button on a checker/cracker and sitting back awaiting hits, Is by no means educational.

Just remember: "The tool doesn't make the cracker, the cracker makes the tool". When you know how to effectively code tools, you're on the right track to broaden your knowledge.