Go to a local Hackerspace if you find one. 4chan /g and /sci will certainly challenge you, if you challenge them. 3b1b discord group is also nice. Lesswrong an

Go to a local Hackerspace if you find one. 4chan /g and /sci will certainly challenge you, if you challenge them. 3b1b discord group is also nice. Lesswrong and starslatecodex are nice for blogging.