You need project management training either if you are at the beginning of your project management career path, or if you are a seasoned and experienced project manager.
Of course, your training needs will differ accordingly, and your options will also depend on your budget (or your organization's budget).
If you intend to achieve a project management certification, then you will also be interested in fulfilling the educational requirement (e.g. 35 contact hours for PMP, or 23 hours for CAPM).
If you are a PMP, then you will be interested in collecting PDUs for your next recertification cycle.
You as a practitioner need to sharpen your saw regularly, and in this case it means deepening your knowledge and practicing your skills in an off-work setting.
Here is a list of carefully selected project management offerings that I personally recommend. Usually there is also an additional discount for my readers included, so make sure to check it out, and make sure you come back here often as this page will get updated often!