Yes i do, i always read white paper before investing. Because i must to know concept of the project and how much inventory token and where token distribution go, besides that i also visited some of the project articles. The most important before investing in my opinion, you must visit the website and social media and participate in their community. You should observe firstly by reading the comments on their social media, reviewing project development, and sharing opinions with other investors. I think this is main assessment before investing.