Looking for IT-Security training and certificates

I am a regular IT staff wanting to gain security skills. What are the best courses and certificates to start with? The NIST Cybersecurity Framework certificate (D-CSF-SC-23) and the security foundations are looking promising. I am just not sure how they complete each other and if there are any I should take before these (and afterwards). I am mainly looking for general training, but feel free to tell me about some important product specific training. Maybe some of you are some steps ahead of me and can tell me what you did or you got a good overview over this field. I appreciate any suggestions.