I understand your concern about whether this is a legitimate MakeHuman request or just spam. It's always important to be cautious when it comes to copyright and trademark issues. Adding your own logo to a texture can potentially lead to legal trouble if it includes registered trademarks. As for your MakeHuman project, using the utilities and material editor to assign new material and customize the t-shirt sounds like a cool idea. If you're looking for additional resources or training, I recently came across a
microsoft certified training program online that could be helpful. It's great to be part of this forum as a newbie, and I'm excited to engage in discussions with fellow members. Let me know if you need any more assistance or have any other interesting topics to discuss.