Where do i place these topics?

[Brett Nortje]

I would like to know in which forums to place the following topics:

[1] Pseudo science,
[2] Electronics,
[3] Maths and science,
[4] General stock market strategies,
[5] World issues from the news,
[6] Philosophy and
[7] arts and crafts.

Could someone please tell me where? i want to recap then carry on making progress in these fields.