How do I gain reputation points?

i want to send private messages and mainly post links but I can't because I don't have enough reputation points

You can look at peoples profiles, those that have a lot of bronze, silver and gold dots. Then you can scroll to the bottom of there profile and see what they have done to get them and you can try to do the same. Other than that im not really sure. Havent paid to much attention to it.

Thx anyway Nimos100

Here's a List of the badges you can seek to earn a lot of reputation points at once.