My personal opinion is to attend the seminar, give it a couple of months of studying, and then taking the exam. That is what I did under the advise of others on this site, and I passed on my first try. There is so much info to try to absorb that many people can't remember it. Get into the code book and learn how to navigate it.
Chuck
Fitting4U,
WELCOME TO THE AWS WELDING FORUM!!
Chuck's advice is very appropriate. Also, get some of the resource manuals recommended on the AWS website under 'Certifications' for self study. Get the WIT book and read it over and over. There is a manual that goes with it with even more practice questions (WIT Workbook), by the time you go through it a couple times you should not have a problem with the Practical Knowledge part of the exam.
Then there are several books available for improving your knowledge and skills with visual inspection and the tools used.
Next, go through the code book you choose to test to and get to know where to find various information.
Then, I would suggest going to the week long seminar and maybe go ahead and take the exam. It will be hard to relax and take the exam. Many have felt it was worth it to take it knowing they may indeed fail just to get used to the time constraint pressure and the format. Then, go study some more if needed and take it again.
Go to the website and you can find a schedule for dates and locations of seminars and exams. There is also a list of education/experience requirements for taking the exam. Make sure you are qualified. If not, still good information to learn and start developing the skills and knowledge you need to be qualified later.
Have a Great Day, Brent