It's pretty easy tbh. Just use sentry mba, No need to pay people for that. Most of us are family around here lol. The only thing you might have to pay for is a config, And I have lots of those I would give you for free. Soo all in all you would need >> Sentry MBA >> Proxys >> And a config for whatever account you would like.
If you want to learn it without using a program such as Sentry, I suggest you learn about HTTP requests, especially POST, and some programming theory. All cracking really is, is iterating over a combolist, sending a login request, and returning the combos that worked. Although, there are usually a lot of obstacles, such as blocking your IP after too many requests, csrf tokens, and captcha. Of course, you can get around all of that pretty easily.
If you want me to point you in the right direction and give you some good resources, just go ahead and PM me. No need to pay someone for this.