For the Exams always stick to the exam blueprint that you can download from the exam website. Following that is the best way to prepare.
If you can build a Lab and start playing with it. Set configuration goals and work towards doing that and you will be facing issues that you will have to fix. If you don't have spare hardware, you always can create a nested lab (ESXi on top of ESXi)Triple VCIX (CMA-NV-DCV) | vExpert | MCSE | CCNA
Moderator: Thread moved to the VCP area.
As you mentioned 6.7, check the “no VCP certifications” path (the second one on the list): VMware Certified Professional - Data Center Virtualization 2020 (VCP-DCV 2020)
You will need to complete authorised 6.7 training and pass 2 exams - Foundation and Professional.
To find out what topics are covered in each exam, follow the links on the page and download the exam guides. You’ll also find links in the guides to the documentation which you can use to learn how to set things up.